Medium severity5.3NVD Advisory· Published May 15, 2026· Updated May 18, 2026
CVE-2026-8454
CVE-2026-8454
Description
Imager::File::GIF versions through 1.002 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files.
Imager::File::GIF's i_readgif_multi_low allocates a single per-row buffer GifRow sized for the GIF's global screen width 'SWidth' and reuses it across every image in the file.
The page-match branch validates Image.Width + Image.Left > SWidth before each DGifGetLine write, but the parallel skip-image branch at imgif.c:790-805 calls DGifGetLine(GifFile, GifRow, Width) with no such check.
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Affected products
3Patches
Vulnerability mechanics
References
3- github.com/tonycoz/imager/commit/782e9c06cc75a0f7eed383f39522f51f44598b04.patchnvdPatch
- www.openwall.com/lists/oss-security/2026/05/15/15nvdMailing ListThird Party Advisory
- metacpan.org/release/TONYC/Imager-File-GIF-1.003/source/ChangesnvdRelease Notes
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