CVE-2026-112202: Out-of-bounds Read

Description

Imager::File::GIF versions before 1.006 for Perl allow out-of-bounds reads when consolidating GIF images. With `gif_consolidate => 1`, palette indices from the image are used without checking the colour table's bounds. The i_readgif_low routine reads beyond the heap allocation and copies the bytes into output pixels. The default GIF reader is not affected. The same code ships bundled in the Imager distribution. An attacker supplying a crafted GIF can disclose adjacent heap memory through the decoded output and may crash the process.

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Weakness Type (CWE)

CWE-125 Out-of-bounds Read

References

Other References

https://github.com/tonycoz/imager/commit/dec96f12b3d8a7fd94e86264953a5e4919dd6036.patch https://github.com/tonycoz/imager/security/advisories/GHSA-v4hp-5h6w-9897 https://metacpan.org/release/TONYC/Imager-1.040/changes https://metacpan.org/release/TONYC/Imager-File-GIF-1.006/changes

Frequently Asked Questions

What is CVE-2026-112202? +

Imager::File::GIF versions before 1.006 for Perl allow out-of-bounds reads when consolidating GIF images. With `gif_consolidate => 1`, palette indices from the image are used without checking the colour table's bounds. The i_readgif_low routine reads beyond the heap allocation and copies the bytes into output pixels. The default GIF reader is not affected. The same code ships bundled in the Imager distribution. An attacker supplying a crafted GIF can disclose adjacent heap memory through the decoded output and may crash the process.

How do I check if I'm vulnerable to CVE-2026-112202? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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