Is CVE-2026-8454 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8454 being exploited in the wild.

How severe is CVE-2026-8454?

Medium severity, with a CVSS score of 5.3, published 15 May 2026.

Which products and versions are affected?

Tony Cook Imager::File::GIF through 1.002.

Is there a fix for CVE-2026-8454?

A patch was published on 2026-05-15: Fixed version 1.003 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-8454 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-8454?

Check whether you run Tony Cook Imager::File::GIF at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8454: Imager::File::GIF heap out-of-bounds write in i_readgif_multi_low

CVE-2026-8454 · Severity: medium · CVSS 5.3 · Published 2026-05-15

Imager::File::GIF is a Perl library used for processing and reading GIF image files. A vulnerability in how it handles multi-frame GIF files allows a specially crafted image to cause a memory error. This could lead to application crashes or unpredictable behavior when the software attempts to process a malicious image.

Technologies: Tony Cook Imager::File::GIF. Vendors: Tony Cook.

Quick answers

Is CVE-2026-8454 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8454 being exploited in the wild.
How severe is CVE-2026-8454?: Medium severity, with a CVSS score of 5.3, published 15 May 2026.
Which products and versions are affected?: Tony Cook Imager::File::GIF through 1.002.
Is there a fix for CVE-2026-8454?: A patch was published on 2026-05-15: Fixed version 1.003 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-8454 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-8454?: Check whether you run Tony Cook Imager::File::GIF at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A heap out-of-bounds write exists in the i_readgif_multi_low function within imgif.c. The library allocates a single per-row buffer (GifRow) based on the GIF's global screen width (SWidth) and reuses it for all frames. While the 'page-match' branch validates that a frame's width and offset do not exceed SWidth, the 'skip-image' branch (lines 790-805) calls DGifGetLine without this validation. An attacker can provide a multi-frame GIF where a skipped frame's width exceeds the allocated buffer, leading to a heap overflow. This is fixed in version 1.003 by moving the dimension validation to a common code path.

Affected products

Tony Cook Imager::File::GIF through 1.002

Timeline

2026-05-12: other: Issue identified
2026-05-13: other: Issue reported to maintainer
2026-05-15: patched: Fixed version 1.003 released
2026-05-15: advisory: Public disclosure and CVE assignment

References

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