{"id":"CVE-2023-4863","aliases":["A-299477569","ASB-A-299477569","CVE-2023-5129","GHSA-j7hp-h8jx-5ppr","PYSEC-2026-1794","RUSTSEC-2023-0060","RUSTSEC-2023-0061"],"url":"https://o3.security/vulnerability/CVE-2023-4863","summary":"libwebp: OOB write in BuildHuffmanTable","details":"Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)","published":"2023-09-12T14:24:59.275Z","modified":"2026-08-12T13:32:46.654890Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.99979,"percentile":0.99979,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":26,"affectedPackages":[{"ecosystem":"crates.io","name":"libwebp-sys2","fixedVersion":"0.1.8"},{"ecosystem":"crates.io","name":"libwebp-sys","fixedVersion":"0.9.3"},{"ecosystem":"crates.io","name":"webp","fixedVersion":"0.2.6"},{"ecosystem":"Go","name":"github.com/chai2010/webp","fixedVersion":"1.4.0"},{"ecosystem":"Go","name":"github.com/chai2010/webp","fixedVersion":"0.0.0-20250406010349-76805d5a8860"},{"ecosystem":"Go","name":"github.com/chai2010/webp","fixedVersion":"1.1.2-0.20250406010349-76805d5a8860"},{"ecosystem":"npm","name":"electron","fixedVersion":"22.3.24"},{"ecosystem":"npm","name":"electron","fixedVersion":"24.8.3"},{"ecosystem":"npm","name":"electron","fixedVersion":"25.8.1"},{"ecosystem":"npm","name":"electron","fixedVersion":"26.2.1"},{"ecosystem":"npm","name":"electron","fixedVersion":"27.0.0-beta.2"},{"ecosystem":"NuGet","name":"SkiaSharp","fixedVersion":"2.88.6"},{"ecosystem":"NuGet","name":"magick.net-q16-anycpu","fixedVersion":"13.3.0"},{"ecosystem":"NuGet","name":"magick.net-q16-hdri-anycpu","fixedVersion":"13.3.0"},{"ecosystem":"NuGet","name":"magick.net-q16-x64","fixedVersion":"13.3.0"},{"ecosystem":"NuGet","name":"magick.net-q8-anycpu","fixedVersion":"13.3.0"},{"ecosystem":"NuGet","name":"magick.net-q8-openmp-x64","fixedVersion":"13.3.0"},{"ecosystem":"NuGet","name":"magick.net-q8-x64","fixedVersion":"13.3.0"},{"ecosystem":"PyPI","name":"pillow","fixedVersion":"10.0.1"}],"fix":{"url":"https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a","label":"webmproject/libwebp@902bc91"},"references":[{"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"},{"type":"WEB","url":"https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/"},{"type":"WEB","url":"https://crbug.com/1479274"},{"type":"WEB","url":"https://en.bandisoft.com/honeyview/history/"},{"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":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863"},{"type":"WEB","url":"https://news.ycombinator.com/item?id=37478403"},{"type":"WEB","url":"https://security-tracker.debian.org/tracker/CVE-2023-4863"},{"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.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4863"},{"type":"WEB","url":"https://www.vicarius.io/vsociety/posts/zero-day-webp-vulnerability-cve-2023-4863"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4863.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4863"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202309-05"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202401-10"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230929-0011/"},{"type":"ADVISORY","url":"https://www.bentley.com/advisories/be-2023-0001/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5496"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5497"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5498"},{"type":"ADVISORY","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1215231"},{"type":"FIX","url":"https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a"},{"type":"ARTICLE","url":"https://blog.isosceles.com/the-webp-0day/"},{"type":"ARTICLE","url":"https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T13:32:46.654890Z"}}