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Red Hat Security Advisory

RHSA-2026:65525

Red Hat Hardened Images RPMs Security Update

Released 2026-09-08 · Red Hat rating Moderate · View on Red Hat →

Fixed in

Fixes 4 records

Priority MEDIUM 60

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credential…

CVSS 4.0MEDIUM 6.0 Network No auth User interaction EPSS 0.00528 Published 2026-08-18 Fixed in 3.10.22, 3.11.17 +4 CWE-319
Priority LOW 28

The "stringprep" module didn't process characters from RFC 3454 tables B.2 or B.3 correctly: the latest Unicode codepoint attributes were used instead of the specified Unicode 3.2.0.

CVSS 4.0MEDIUM 6.0 Network No auth User interaction EPSS 0.00734 Published 2026-08-18 Fixed in 3.10.22, 3.11.17 +4 CWE-436
Priority LOW 12

When decompressing crafted zip files using the bzip/LZMA/Zstandard compressions, Python could use an attacker-controlled size to pre-allocate memory, possibly resulting in memory exhaustion.

CVSS 4.0LOW 2.1 Network No auth User interaction EPSS 0.00526 Published 2026-08-25 Fixed in 3.10.22, 3.11.17 +4 CWE-400