CVE-2026-0865

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 39.7% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-01-20 21:26Z7 MO AGO

Last updated

2026-03-03 14:43Z6 MO AGO

Reserved

2026-01-12

Assigning CNA

PSF

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class

Data version

5.2

Document digest

4d6ee4ef206c227c913cfcfffccce6d2c9e065128cfd1d2eeef6751bba34ff5c

• github.comhttps://github.com/python/cpython/pull/143917patch
• github.comhttps://github.com/python/cpython/issues/143916issue-tracking
• mail.python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/BJ6QPHNSHJTS3A7CFV6IBMCAP2DWRVNT/vendor-advisory
• github.comhttps://github.com/python/cpython/commit/22e4d55285cee52bc4dbe061324e5f30bd4dee58patch
• github.comhttps://github.com/python/cpython/commit/23e3c0ae867cca0130e441e776c9955b9027c510patch
• github.comhttps://github.com/python/cpython/commit/4802b96a2cde58570c24c13ef3289490980961c5patch
• github.comhttps://github.com/python/cpython/commit/f7fceed79ca1bceae8dbe5ba5bc8928564da7211patch
• github.comhttps://github.com/python/cpython/commit/2f840249550e082dc351743f474ba56da10478d2patch
• github.comhttps://github.com/python/cpython/commit/e4846a93ac07a8ae9aa18203af0dd13d6e7a6995patch
• github.comhttps://github.com/python/cpython/commit/66da7bf6fe7b81e3ecc9c0a25bd47d4616c8d1a6patch
• github.comhttps://github.com/python/cpython/commit/83ecd18779f286d872f68bfce175651e407d9fffpatch
• github.comhttps://github.com/python/cpython/commit/bfba660085767f8c2d582134e9d511a85eda04cfpatch
• github.comhttps://github.com/python/cpython/commit/286e3ac39984fe85a17f4ab39c64d382137aae5fpatch
• github.comhttps://github.com/python/cpython/commit/8bb044d29310bb05d15086cdaa8bf64867d61a97patch
• github.comhttps://github.com/python/cpython/commit/c592227ffb48679af9845a45dbb0875d975bb219patch