{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-110601", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-14T13:07:20.557Z", "datePublished": "2026-10-14T14:16:43.022Z", "dateUpdated": "2026-10-14T14:16:43.022Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-14T14:16:43.022Z" }, "datePublic": "2026-03-04T00:00:00.000Z", "title": "libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIF", "descriptions": [ { "lang": "en", "value": "libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 contains a heap out-of-bounds write vulnerability in gif_init_frame() in src/fromgif.c, which never checks the GIF transparent color index against the palette size. Attackers can supply a crafted GIF with a small color table and large transparent index, processed with a background color set, to write bytes past the palette buffer, causing heap corruption or crashes." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Out-of-bounds Write", "cweId": "CWE-787", "type": "CWE" } ] } ], "affected": [ { "vendor": "saitoha", "product": "libsixel", "defaultStatus": "unaffected", "versions": [ { "version": "0", "lessThan": "1.8.7-r1", "status": "affected", "versionType": "custom" }, { "version": "1.9.0", "lessThanOrEqual": "1.10.5", "status": "affected", "versionType": "custom" } ], "packageURL": "pkg:github/saitoha/libsixel", "collectionURL": "https://github.com", "repo": "https://github.com/saitoha/libsixel" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:saitoha:libsixel:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.8.7-r1" }, { "vulnerable": true, "criteria": "cpe:2.3:a:saitoha:libsixel:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.9.0", "versionEndIncluding": "1.10.5" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.3, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/saitoha/libsixel/issues/220", "tags": [ "issue-tracking" ] }, { "url": "https://github.com/saitoha/libsixel/commit/bdbab09816eb9188429c37a50b97c5e66dfe5047", "tags": [ "patch" ] }, { "url": "https://github.com/saitoha/libsixel/releases/tag/v1.8.7-r1", "tags": [ "release-notes" ], "name": "libsixel v1.8.7-r1 Release Notes" }, { "url": "https://github.com/saitoha/libsixel/blob/v1.8.7/src/fromgif.c#L182-L248", "tags": [ "technical-description" ] }, { "url": "https://github.com/libsixel/libsixel/blob/v1.10.5/src/fromgif.c#L219-L240", "tags": [ "technical-description" ] }, { "url": "https://hackmd.io/@haind-pwn/libsixel-gif-transparent-index-oob-write", "tags": [ "third-party-advisory" ] }, { "name": "VulnCheck Advisory: libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIF", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/libsixel-before-1.8.7-r1-and-1.9.0-through-1.10.5-heap-out-of-bounds-write-via-gif" } ], "credits": [ { "lang": "en", "value": "ShangzhiXu", "type": "finder" }, { "lang": "en", "value": "HaiND from the Post and Telecommunication Institute of Technology", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }