CVE-2026-8454
CVE-2026-8454 is a medium-severity vulnerability in Tonyc Imager with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (9th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30535
- Weakness: CWE-787
- Affected product: Tonyc Imager
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-8454?
- 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.
- How severe is CVE-2026-8454?
- CVE-2026-8454 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-8454 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-8454?
- CVE-2026-8454 affects Tonyc Imager. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-8454?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-8454 have an EU (EUVD) identifier?
- Yes. CVE-2026-8454 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30535.
- When was CVE-2026-8454 published?
- CVE-2026-8454 was published on 2026-05-15 and last updated on 2026-06-17.
References
- https://github.com/tonycoz/imager/commit/782e9c06cc75a0f7eed383f39522f51f44598b04.patch
- https://metacpan.org/release/TONYC/Imager-File-GIF-1.003/source/Changes
- http://www.openwall.com/lists/oss-security/2026/05/15/15
Affected products (1)
- cpe:2.3:a:tonyc:imager\:\:file\:\:gif:*:*:*:*:*:perl:*:*
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