Red Hat Security Advisory

RHSA-2026:50771

python3.12 security update

Released 2026-08-05 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream E4S (v.9.4) python3.12-3.12.1-4.el9_4.14, python3.12-devel-3.12.1-4.el9_4.14, python3.12-libs-3.12.1-4.el9_4.14 +1

Fixes 1 record

TI-2026-12884 CVE-2026-15308 · GHSA-7qj2-q5c8-cxx5

Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

MEDIUM 45

The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00637 Published 2026-07-09 Partial fix · 3.10.21, 3.11.16 +4 CWE-400