Out-of-bounds Read 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.
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Test your applications- Snyk IDSNYK-UNMANAGED-SAITOHALIBSIXEL-16110811
- published20 Apr 2026
- disclosed14 Apr 2026
- creditnicoppida
Introduced: 14 Apr 2026
CVE-2026-33019 (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 Out-of-bounds Read in the sixel_encoder_do_clip process when handling the --crop option. An attacker can cause a crash and potentially disclose sensitive information by supplying a specially crafted crop argument with positive coordinates up to INT_MAX, which leads to an out-of-bounds heap read.