Out-of-bounds Write Affecting HappySeaFox/sail package, versions [,1.0.0)
Threat Intelligence
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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-HAPPYSEAFOXSAIL-16300063
- published26 Apr 2026
- disclosed18 Apr 2026
- creditKeyvanhardani
Introduced: 18 Apr 2026
CVE-2026-40494 (opens in a new tab)How to fix?
Upgrade HappySeaFox/sail to version 1.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write in the tga.c process of decoding TGA images using RLE compression, specifically when handling the raw-packet path, due to missing bounds checks. An attacker can achieve arbitrary code execution or cause a denial of service by supplying a specially crafted TGA file that writes attacker-controlled data past the end of a heap buffer.