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VULNERABILITIES

CVE-2026-115557 Details

Description

Python has added a denylist for known compromised certificates to the "ssl" module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://www.openwall.com/lists/oss-security/2026/10/24/5 CVE
https://emudhra.we-have-a-problem.com/ [email protected]
https://github.com/python/cpython/commit/21a50891ab4be2e9955239e625ae2b40c6b1854d [email protected]
https://github.com/python/cpython/commit/36cd295f32fc9ba19399e01abee91231440a41dd [email protected]
https://github.com/python/cpython/commit/48d9b2712cd52206c7a5882d0fdca4863ed65e93 [email protected]

see all 18 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-299Improper Check for Certificate Revocation[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-115557
NVD Published Date:
Oct 24, 2026
NVD Last Modified:
Nov 2, 2026
Source:
[email protected]
CVE-2026-115557 Details - Not Deferred