libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIF
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.
CVE-2026-110601
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-110601
libsixel
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/saitoha/libsixel",
"vendor": "saitoha",
"product": "libsixel",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.8.7-r1",
"versionType": "custom"
},
{
"status": "affected",
"version": "1.9.0",
"versionType": "custom",
"lessThanOrEqual": "1.10.5"
}
],
"packageURL": "pkg:github/saitoha/libsixel",
"collectionURL": "https://github.com",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-110601
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #41898 · Revision 1
- Added to Heist Feed
- Publisher date