CVE-2026-4224

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

0.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 50.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Modified. NVD last modified this record on 2026-08-13.

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

2026-03-16 17:52Z5 MO AGO

Last updated

2026-08-13 00:27Z22 DAYS AGO

Reserved

2026-03-15

Assigning CNA

PSF

Record state

PUBLISHED

Severity

Medium (CVSS 6.0)

CNA CVSS vector

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

Weaknesses

• CWE-674Uncontrolled RecursionClass
• CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

fe23bee2fdc98677053fe062e8a116ab4ed84b5c30a63da6d304f76398d78f41

• github.comhttps://github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf532768patch
• mail.python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R/vendor-advisory
• github.comhttps://github.com/python/cpython/issues/145986issue-tracking
• github.comhttps://github.com/python/cpython/pull/145987patch
• github.comhttps://github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd4apatch
• github.comhttps://github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1f3patch
• github.comhttps://github.com/python/cpython/commit/642865ddf4b232da1f3b1f7abcfa3254c4bfe785patch
• github.comhttps://github.com/python/cpython/commit/af856a7177326ac25d9f66cc6dd28b554d914feepatch
• github.comhttps://github.com/python/cpython/commit/24ce88b285f56ee11626cf5e472af3cd8cc7c621patch
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/03/16/4