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Distrust compromised intermediate certificates in ssl module

Exact source revision recorded 25 Oct 2026 02:22:52 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-115557

Published

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.

Source published
24 Oct 2026 14:15:14 UTC
Source modified
25 Oct 2026 00:39:26 UTC
Observed here
25 Oct 2026 02:22:52 UTC
Source terms
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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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Sources read 26 Oct 00:50 UTC · 271 of 271 readable · 269 fully read · documentation 461/464 current