CVE-2026-8454: CWE-787 Out-of-bounds Write in TONYC Imager::File::GIF
CVE-2026-8454 is a medium severity vulnerability in the TONYC Imager::File::GIF Perl module versions through 1. 002. It involves a heap out-of-bounds write triggered by crafted multi-frame GIF files due to improper bounds checking in the DGifGetLine function call within the image parsing logic. This flaw can potentially lead to memory corruption. No official patch or remediation guidance is currently available, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
The vulnerability in Imager::File::GIF arises from the i_readgif_multi_low function allocating a single per-row buffer sized for the GIF's global screen width and reusing it across multiple images. While one code path validates that Image.Width + Image.Left does not exceed the global width before writing, another code path (skip-image branch) calls DGifGetLine without this bounds check, allowing a heap out-of-bounds write when processing crafted multi-frame GIF files. This is classified as CWE-787 (Out-of-bounds Write).
Potential Impact
Successful exploitation could lead to memory corruption, potentially affecting confidentiality, integrity, and availability of the affected system. The CVSS score of 5.3 reflects a medium severity with local attack vector, low complexity, no privileges required, but user interaction needed, and impacts on confidentiality, integrity, and availability are all low.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when processing untrusted multi-frame GIF files with the affected Imager::File::GIF module. No official mitigation or workaround has been published.
CVE-2026-8454: CWE-787 Out-of-bounds Write in TONYC Imager::File::GIF
Description
CVE-2026-8454 is a medium severity vulnerability in the TONYC Imager::File::GIF Perl module versions through 1. 002. It involves a heap out-of-bounds write triggered by crafted multi-frame GIF files due to improper bounds checking in the DGifGetLine function call within the image parsing logic. This flaw can potentially lead to memory corruption. No official patch or remediation guidance is currently available, and no known exploits are reported in the wild.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Imager::File::GIF arises from the i_readgif_multi_low function allocating a single per-row buffer sized for the GIF's global screen width and reusing it across multiple images. While one code path validates that Image.Width + Image.Left does not exceed the global width before writing, another code path (skip-image branch) calls DGifGetLine without this bounds check, allowing a heap out-of-bounds write when processing crafted multi-frame GIF files. This is classified as CWE-787 (Out-of-bounds Write).
Potential Impact
Successful exploitation could lead to memory corruption, potentially affecting confidentiality, integrity, and availability of the affected system. The CVSS score of 5.3 reflects a medium severity with local attack vector, low complexity, no privileges required, but user interaction needed, and impacts on confidentiality, integrity, and availability are all low.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when processing untrusted multi-frame GIF files with the affected Imager::File::GIF module. No official mitigation or workaround has been published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-05-13T02:02:58.825Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a070551ec166c07b034bb28
Added to database: 5/15/2026, 11:36:49 AM
Last enriched: 5/22/2026, 3:33:19 PM
Last updated: 6/10/2026, 3:22:06 PM
Views: 55
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