Integer Overflow to Buffer Overflow Affecting HappySeaFox/sail package, versions [,0.9.9)
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-HAPPYSEAFOXSAIL-12484294
- published3 Sept 2025
- disclosed25 Aug 2025
- creditUnknown
Introduced: 25 Aug 2025
CVE-2025-52456 (opens in a new tab)How to fix?
Upgrade HappySeaFox/sail to version 0.9.9 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow to Buffer Overflow via the WebP Image Decoding functionality. An attacker can execute arbitrary code by enticing a user to open a specially crafted .webp animation file, which triggers an integer overflow during stride calculation and results in a heap-based buffer overflow.