BREW-PILLOW-CVE-2023-4863 (GHSA-J7HP-H8JX-5PPR)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:28 – Updated: 2026-09-10 20:25 – Source website
VLAI
Summary
libwebp: OOB write in BuildHuffmanTable
Details
Heap buffer overflow in libwebp allow a remote attacker to perform an out of bounds memory write via a crafted HTML page.
Severity
8.8 (High)
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "10.0.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "pillow",
"purl": "pkg:brew/pillow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/pillow@12.3.0",
"name": "pillow",
"strategy": "registry",
"subject_version": "12.3.0"
}
]
},
"details": "Heap buffer overflow in libwebp allow a remote attacker to perform an out of bounds memory write via a crafted HTML page.",
"id": "BREW-pillow-CVE-2023-4863",
"modified": "2026-09-10T20:25:15Z",
"published": "2026-08-13T17:28:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4863"
},
{
"type": "WEB",
"url": "https://github.com/qnighy/libwebp-sys2-rs/pull/21"
},
{
"type": "WEB",
"url": "https://github.com/python-pillow/Pillow/pull/7395"
},
{
"type": "WEB",
"url": "https://github.com/jaredforth/webp/pull/30"
},
{
"type": "WEB",
"url": "https://github.com/electron/electron/pull/39823"
},
{
"type": "WEB",
"url": "https://github.com/electron/electron/pull/39825"
},
{
"type": "WEB",
"url": "https://github.com/electron/electron/pull/39826"
},
{
"type": "WEB",
"url": "https://github.com/electron/electron/pull/39827"
},
{
"type": "WEB",
"url": "https://github.com/electron/electron/pull/39828"
},
{
"type": "WEB",
"url": "https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a"
},
{
"type": "WEB",
"url": "https://github.com/qnighy/libwebp-sys2-rs/commit/4560c473a76ec8bd8c650f19ddf9d7a44f719f8b"
},
{
"type": "WEB",
"url": "https://github.com/jaredforth/webp/commit/9d4c56e63abecc777df71c702503c3eaabd7dcbc"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202401-10"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-05"
},
{
"type": "WEB",
"url": "https://security-tracker.debian.org/tracker/CVE-2023-4863"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2023-0061.html"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2023-0060.html"
},
{
"type": "WEB",
"url": "https://pillow.readthedocs.io/en/stable/releasenotes/10.0.1.html#security"
},
{
"type": "WEB",
"url": "https://news.ycombinator.com/item?id=37478403"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863"
},
{
"type": "WEB",
"url": "https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230929-0011"
},
{
"type": "WEB",
"url": "https://sethmlarson.dev/security-developer-in-residence-weekly-report-16"
},
{
"type": "WEB",
"url": "https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863"
},
{
"type": "WEB",
"url": "https://www.bentley.com/advisories/be-2023-0001"
},
{
"type": "WEB",
"url": "https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5496"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5497"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5498"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2023-40"
},
{
"type": "WEB",
"url": "https://www.vicarius.io/vsociety/posts/zero-day-webp-vulnerability-cve-2023-4863"
},
{
"type": "WEB",
"url": "https://blog.isosceles.com/the-webp-0day"
},
{
"type": "WEB",
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1215231"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1479274"
},
{
"type": "WEB",
"url": "https://en.bandisoft.com/honeyview/history"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/discussions/6664"
},
{
"type": "WEB",
"url": "https://github.com/dlemstra/Magick.NET/releases/tag/13.3.0"
},
{
"type": "PACKAGE",
"url": "https://github.com/webmproject/libwebp"
},
{
"type": "WEB",
"url": "https://github.com/webmproject/libwebp/releases/tag/v1.3.2"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/21/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/5"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/6"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/7"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/22/8"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/26/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/26/7"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/28/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/28/2"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/09/28/4"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "libwebp: OOB write in BuildHuffmanTable",
"upstream": [
"GHSA-j7hp-h8jx-5ppr",
"A-299477569",
"ASB-A-299477569",
"CVE-2023-4863",
"CVE-2023-5129",
"PYSEC-2026-1794",
"RUSTSEC-2023-0060",
"RUSTSEC-2023-0061"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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