Vulnerability-Lookup

RHSA-2026:47892

Vulnerability from csaf_redhat - Published: 2026-07-29 13:32 - Updated: 2026-07-29 16:55

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Severity

Moderate

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: python3.14: * python-unversioned-command-3.14.6-2.1.hum1 (noarch) * python3-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-debug-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-devel-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-idle-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-libs-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-test-3.14.6-2.1.hum1 (aarch64, x86_64) * python3-tkinter-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-debug-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-devel-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-idle-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-libs-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-test-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-freethreading-tkinter-3.14.6-2.1.hum1 (aarch64, x86_64) * python3.14-3.14.6-2.1.hum1.src (src) Security Fix(es): python3.14: * CVE-2026-4360

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-4360

A flaw was found in the Python `Tarfile.extract()` function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the `filter` parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leading to unauthorized modifications or privilege issues on the system.

5.0 (Medium)


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

CWE-279 - Incorrect Execution-Assigned Permissions

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:python3-14-main@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-14-main@noarch	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-14-main@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-14-main@x86_64	—	Vendor Fix fix

Threats

Impact Moderate

References

12 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:47892	self
https://access.redhat.com/security/cve/CVE-2026-4360	external
https://access.redhat.com/security/updates/classi…	external
https://images.redhat.com/	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-4360	self
https://bugzilla.redhat.com/show_bug.cgi?id=2494987	external
https://www.cve.org/CVERecord?id=CVE-2026-4360	external
https://nvd.nist.gov/vuln/detail/CVE-2026-4360	external
https://github.com/python/cpython/issues/151987	external
https://github.com/python/cpython/pull/151988	external
https://mail.python.org/archives/list/security-an…	external

JSON

To clipboard

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        "name": "Incorrect Execution-Assigned Permissions"
      },
      "discovery_date": "2026-06-30T15:01:14.438690+00:00",
      "ids": [
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          "text": "2494987"
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      "notes": [
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          "category": "description",
          "text": "A flaw was found in the Python `Tarfile.extract()` function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the `filter` parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leading to unauthorized modifications or privilege issues on the system.",
          "title": "Vulnerability description"
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          "text": "python: Python Tarfile: Unexpected file ownership when extracting hardlinks",
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          "text": "This Moderate flaw in Python\u0027s Tarfile module allows a local attacker with low privileges to achieve a high integrity impact. By tricking a user into extracting a specially crafted untrusted tar file containing hardlinks, the attacker could cause files to be written with unexpected ownership, potentially leading to unauthorized file modification.",
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          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/"
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:32:41+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:python3-14-main@aarch64",
            "Red Hat Hardened Images:python3-14-main@noarch",
            "Red Hat Hardened Images:python3-14-main@src",
            "Red Hat Hardened Images:python3-14-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:47892"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:python3-14-main@aarch64",
            "Red Hat Hardened Images:python3-14-main@noarch",
            "Red Hat Hardened Images:python3-14-main@src",
            "Red Hat Hardened Images:python3-14-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "python: Python Tarfile: Unexpected file ownership when extracting hardlinks"
    }
  ]
}

CVE-2026-4360 (GCVE-0-2026-4360)

Vulnerability from cvelistv5 – Published: 2026-06-30 14:45 – Updated: 2026-07-23 18:44

Title

Tarfile.extract() doesn't fully respect filter parameter

Summary

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.

Severity

2 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-281

Assigner

PSF

References

9 references

URL	Tags
https://mail.python.org/archives/list/security-an…	vendor-advisory
https://github.com/python/cpython/pull/151988	patch
https://github.com/python/cpython/issues/151987	issue-tracking
https://github.com/python/cpython/commit/5e0ef3f1…	patch
https://github.com/python/cpython/commit/7b57e8d5…	patch
https://github.com/python/cpython/commit/7ccdbaba…	patch
https://github.com/python/cpython/commit/eee3ddf0…	patch
https://github.com/python/cpython/commit/d2b2f5ea…	patch
https://github.com/python/cpython/commit/cf23b915…	patch

Impacted products

1 product

Vendor	Product	Version
Python Software Foundation	CPython	Affected: 0 , < 3.15.0b4 (python)

Credits

Michael Scovetta (https://github.com/scovetta) Seth Larson (https://github.com/sethmlarson) Petr Viktorin (https://github.com/encukou)

Show details on NVD website

JSON

To clipboard

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            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-281",
              "description": "CWE-281",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-23T18:44:47.031Z",
        "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "shortName": "PSF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/pull/151988"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/python/cpython/issues/151987"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/5e0ef3f1afe892e4f64eb83368db57ac4c40cba0"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/7b57e8d51446297b8c7c482d224bc5f1938e4301"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/7ccdbaba2c54250a70d7f25632152df7655a5e0a"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/eee3ddf0ca10283cc7fea724aae9cd8665f8d15e"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/d2b2f5eacab4dd48446b63340613b05dcbbf0b44"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/cf23b9153181062150d061468b6d24af33fe214f"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Tarfile.extract() doesn\u0027t fully respect filter parameter",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
    "assignerShortName": "PSF",
    "cveId": "CVE-2026-4360",
    "datePublished": "2026-06-30T14:45:35.601Z",
    "dateReserved": "2026-03-17T19:25:46.527Z",
    "dateUpdated": "2026-07-23T18:44:47.031Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

RHSA-2026:47892

CVE-2026-4360 (GCVE-0-2026-4360)

Tags

Sightings

Nomenclature