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CVE-2026-8454

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · tonycNVD modified 2026-10-26 14:10

Affected (CPE criteria) 1

  • cpe:2.3:a:tonyc:imager\:\:file\:\:gif:*:*:*:*:*:perl:*:*

References 3