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First seenSep 1, 2026
Last mentioned3d ago

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3 articles · newest first

CPython sandbox escape zero-day

Python CPython sandbox escape vulnerability threatens AI supply chain; upstream not backporting to security releases.

oss-securityupdated Nov 6, 21:41 UTC · 2d agofirst Nov 5, 20:08 UTC · 3d agoVulnerabilityExploited3 sources2 · 1 read

CPython [CVE-2026-19445] Use-after-free of a server-side SSLContext when sni_callback switches contexts

CPython CVE-2026-19445 is a critical use-after-free when a server SNI callback switches SSL contexts.

oss-securitySep 30, 17:00 UTC · Sep 30, 2026Vulnerability 2 sourcesCVE-2026-194453

Python 3.15.0 candidate 2 is here!

Python 3.15.0 release candidate 2 arrives, locking changes to bug fixes ahead of the final October release.

Simon WillisonSep 1, 14:59 UTC · Sep 1, 2026Other3 · 1 read

Related CVEs

by mentions

CVE-2026-19445<1%9.2
Use-after-free in CPython server SSLContext SNI switch
published Sep 30, 2026Python Software Foundation CPython (ssl module, server-side SNI)PoC

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