Improper Validation of Syntactic Correctness of Input Affecting cpython package, versions [0,]
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-CPYTHON-16032304
- published15 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
CVE-2026-3446 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input in the base64 decoder. An attacker can cause the processing of incomplete data by supplying base64-encoded input with additional data after the first padding character, which is ignored during decoding. This may result in inconsistent data handling or integrity issues across different implementations.
Workaround
This vulnerability can be avoided by using "validate=True".