Integer Overflow or Wraparound Affecting saitoha/libsixel package, versions [0.11.0,1.8.7-r2)
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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- published15 May 2026
- disclosed14 May 2026
- creditUnknown
Introduced: 14 May 2026
NewCVE-2026-44637 (opens in a new tab)How to fix?
Upgrade saitoha/libsixel to version 1.8.7-r2 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the sixel_decode_raw_impl process. An attacker can cause a heap out-of-bounds write by supplying specially crafted SIXEL data that manipulates the repeat_count and pos_x values, leading to an integer overflow and bypassing buffer size checks.