Use After Free Affecting saitoha/libsixel package, versions [,1.8.7-r1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-SAITOHALIBSIXEL-16110808
- published20 Apr 2026
- disclosed14 Apr 2026
- creditnicoppida
Introduced: 14 Apr 2026
CVE-2026-33023 (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_with_gdkpixbuf process when built with the --with-gdk-pixbuf2 option. An attacker can achieve information disclosure, memory corruption, or execute arbitrary code by supplying a crafted image to an application using the affected library with gdk-pixbuf2 support. This is only exploitable if the library is built with the --with-gdk-pixbuf2 configuration option enabled.