CRLF Injection Affecting python package, versions [,3.10.20)[3.11.0-a1,3.11.15)[3.12.0-a1,3.12.13)[3.13.0-a1,3.13.12)[3.14.0-a1,3.14.3)[3.15.0-a1,3.15.0-a6)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.42% (35th percentile)

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  • Snyk IDSNYK-UNMANAGED-PYTHON-15091541
  • published25 Jan 2026
  • disclosed20 Jan 2026
  • creditUnknown

Introduced: 20 Jan 2026

CVE-2026-0672  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade python to version 3.10.20, 3.11.15, 3.12.13, 3.13.12, 3.14.3, 3.15.0-a6 or higher.

Overview

Affected versions of this package are vulnerable to CRLF Injection via the http.cookies.Morsel field. An attacker can manipulate HTTP responses by injecting arbitrary headers through user-controlled cookie values or parameters.

CVSS Base Scores

version 4.0
version 3.1