CVE-2026-8454 Memory corruption in Imager::File::GIF
Attackers can trigger heap out-of-bounds writes via crafted multi-frame GIF files, potentially leading to code execution or crashes in applications using this Perl library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-8454?
CVE-2026-8454 is a medium-severity memory corruption vulnerability in TONYC Imager::File::GIF, published on 15 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-787
Which versions are affected by CVE-2026-8454?
It affects 1 product.
Products include Tonyc Imager\.
How do I fix CVE-2026-8454?
No fix has been published for CVE-2026-8454 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-8454 being exploited?
There is no known exploitation of CVE-2026-8454 in the wild and no public exploit code.
Sources
Also known as GHSA-8r2w-8p2v-h4g4.