CVE-2026-8328

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

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.4% 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:N/UI:A/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

Awaiting Analysis. NVD last modified this record on 2026-10-26.

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

2026-05-13 20:14Z5 MO AGO

Last updated

2026-08-13 00:26Z2 MO AGO

Reserved

2026-05-11

Assigning CNA

PSF

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

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

Weaknesses

• CWE-918Server-Side Request Forgery (SSRF)Base
• CWE-807Reliance on Untrusted Inputs in a Security DecisionBase

Data version

5.2

Document digest

8d98ed2c58ac341ca7d1a3faefc2f8bc573e69daf1336bdd08db454be4019742

• github.comhttps://github.com/python/cpython/issues/87451issue-tracking
• github.comhttps://github.com/python/cpython/pull/149648patch
• mail.python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/vendor-advisory
• github.comhttps://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06patch
• github.comhttps://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0patch
• github.comhttps://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763patch
• github.comhttps://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1dpatch
• github.comhttps://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9patch
• github.comhttps://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5fpatch
• github.comhttps://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fcebpatch