Improper Verification of Cryptographic Signature Affecting openssl package, versions [3.5.0,3.5.5)[3.6.0,3.6.1)
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-CONAN-OPENSSL-15124523
- published28 Jan 2026
- disclosed27 Jan 2026
- creditStanislav Fort
Introduced: 27 Jan 2026
CVE-2025-15469 (opens in a new tab)How to fix?
Upgrade openssl to version 3.5.5, 3.6.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the openssl dgst command-line tool, which silently truncates input data to 16MB when using one-shot signing algorithms. Signatures for payloads larger than 16MB may appear to be valid although they are not fully verified.
Workflows that both sign and verify using the openssl dgst command are most likely to be exploitable, because other use cases will reject the signature. As a result, streaming digest algorithms for openssl dgst and library users are unaffected.