CVE-2026-12003

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 ImpacttotalSuccessful exploitation gives total 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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 3.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Awaiting Analysis. NVD last modified this record on 2026-10-25.

Red Hat severity

Important. 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

2026-06-16 15:18Z4 MO AGO

Last updated

2026-08-13 00:28Z2 MO AGO

Reserved

2026-06-11

Assigning CNA

PSF

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-427Uncontrolled Search Path ElementBase
• CWE-426Untrusted Search PathBase

Data version

5.2

Document digest

6386b65a9f736e139393c9d97dbb05338cdbb347da3d1e4a8fd8931195bdb80b

• github.comhttps://github.com/python/cpython/pull/151545patch
• github.comhttps://github.com/python/cpython/issues/151544issue-tracking
• httpshttps://https://mail.python.org/archives/list/security-announce@python.org/thread/JIFOBO7UX3LY4VJKJUOKYJV62CFR2IRH/vendor-advisory
• github.comhttps://github.com/python/cpython/commit/16c40f944b7bff724a403cf4902763d095bb4b2apatch
• github.comhttps://github.com/python/cpython/commit/9e863fab283eddca9c2a8f9d1ee30f4dc243e314patch
• github.comhttps://github.com/python/cpython/commit/a86de0bc236fbb9452f98998fc8437e9fca35700patch
• github.comhttps://github.com/python/cpython/commit/b93d6d3399adbd3a5037b6b92fc3587c85ac5d56patch
• github.comhttps://github.com/python/cpython/commit/03ab7b44788bfd6b8927e16bcdbd025aa08dce06patch
• github.comhttps://github.com/python/cpython/commit/872038377db2e170e0e140b5f8aaedf636b3fbf5patch
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/06/16/8