Use After Free Affecting saitoha/libsixel package, versions [,1.8.7-r1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-SAITOHALIBSIXEL-16110812
- published20 Apr 2026
- disclosed14 Apr 2026
- creditnicoppida
Introduced: 14 Apr 2026
CVE-2026-33018 (opens in a new tab)How to fix?
Upgrade saitoha/libsixel to version 1.8.7-r1 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the load_gif function. An attacker can achieve arbitrary code execution or cause a crash by supplying a crafted animated GIF file that triggers a dangling pointer after the second frame is decoded.