Improper Encoding or Escaping of Output 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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- published17 Mar 2026
- disclosed16 Mar 2026
- creditUnknown
Introduced: 16 Mar 2026
CVE-2026-3644 (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 Encoding or Escaping of Output in the http.cookies.Morsel.update() function's |= operator and unpickling paths, http.cookies.BaseCookie.js_output() function. An attacker can inject control characters into cookies by supplying specially crafted input that bypasses input validation.