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Red Hat Security Advisory

RHSA-2026:63782

Red Hat Hardened Images RPMs Security Update

Released 2026-09-04 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 4 records

Priority LOW 27

undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00412 Published 2026-09-04 Partial fix · 6.28.1, 7.29.1 +1 CWE-248