{"id":"JLSEC-2026-822","details":"Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.","modified":"2026-07-30T15:15:05.052393048Z","published":"2026-07-30T15:01:04.165Z","upstream":["CVE-2026-26740"],"database_specific":{"sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26740","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26740","database_specific":{"status":"Modified"},"id":"CVE-2026-26740","imported":"2026-07-30T14:38:08.847Z","modified":"2026-07-23T12:17:15.660Z","published":"2026-03-18T18:16:26.220Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33447"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33450"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33451"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33452"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33455"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33456"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33501"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33502"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33503"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33509"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36004"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36005"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36006"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9683"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9686"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9689"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9693"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-26740"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448747"},{"type":"WEB","url":"https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26740.json"}],"affected":[{"package":{"name":"Giflib_jll","ecosystem":"Julia","purl":"pkg:julia/Giflib_jll?uuid=59f7168a-df46-5410-90c8-f2779963d0ec"},"ranges":[{"type":"SEMVER","events":[{"introduced":"5.2.2+0"},{"fixed":"6.1.3+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-822.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}