CVE-2026-0672

MEDIUM EPSS 31.9%
Published Jan 20, 20265mo ago · Modified Jun 17, 20261w ago
6.0 CVSS 4.0
Medium
Find Similar
Published Jan 20, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters.

CVSS Details

Base Score
6.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
31.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-93

References 9

  • github.com https://github.com/python/cpython/commit/62700107418eb2cca3fc88da036a243ea975f172
  • github.com https://github.com/python/cpython/commit/712452e6f1d4b9f7f8c4c92ebfcaac1705faa440
  • github.com https://github.com/python/cpython/commit/7852d72b653fea0199acf5fc2a84f6f8b84eba8d
  • github.com https://github.com/python/cpython/commit/918387e4912d12ffc166c8f2a38df92b6ec756ca
  • github.com https://github.com/python/cpython/commit/95746b3a13a985787ef53b977129041971ed7f70
  • github.com https://github.com/python/cpython/commit/b1869ff648bbee0717221d09e6deff46617f3e85
  • github.com https://github.com/python/cpython/issues/143919
  • github.com https://github.com/python/cpython/pull/143920
  • mail.python.org https://mail.python.org/archives/list/security-announce@python.org/thread/6VFLQQEIX673KXKFUZXCUNE5AZOGZ45M/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.