ELSA-2026-10950: Security update for 8 packages

ELSA-2026-10950, released April 27, 2026, fixes 11 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.1

Base score, 0 to 10

Highest EPSS

0.0138

72nd percentile

Priority of the 11 CVEs

Patch now 0
                                Urgent 0
                                High 11
                                Routine 0

Fixed package versions

Product	Release	Fixed in
python3.12	ol 8	0:3.12.13-2.el8_10
python3.12-debug	ol 8	0:3.12.13-2.el8_10
python3.12-devel	ol 8	0:3.12.13-2.el8_10
python3.12-idle	ol 8	0:3.12.13-2.el8_10
python3.12-libs	ol 8	0:3.12.13-2.el8_10
python3.12-rpm-macros	ol 8	0:3.12.13-2.el8_10
python3.12-test	ol 8	0:3.12.13-2.el8_10
python3.12-tkinter	ol 8	0:3.12.13-2.el8_10

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2025-59375	libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.	8.1	0.0138	None reported
High	CVE-2026-4224	Stack overflow parsing XML with deeply nested DTD content models	8.1	0.0072	None reported
High	CVE-2026-6100	Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure	9.1	0.0058	None reported
High	CVE-2025-15282	Header injection via newlines in data URL mediatype	8.1	0.0054	None reported
High	CVE-2026-1502	HTTP client proxy tunnel headers not validated for CR/LF	8.1	0.0054	None reported
High	CVE-2026-3644	Incomplete control character validation in http.cookies	8.1	0.0051	None reported
High	CVE-2026-0672	Header injection in http.cookies.Morsel	8.1	0.0048	None reported
High	CVE-2026-4786	Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()	8.1	0.0029	None reported
High	CVE-2025-13837	Out-of-memory when loading Plist	8.1	0.0024	None reported
High	CVE-2026-2297	SourcelessFileLoader does not use io.open_code()	8.1	0.0022	None reported
High	CVE-2025-6075	Quadratic complexity in os.path.expandvars() with user-controlled template	8.1	0.0015	None reported

Also fixes CVE-2025-59375

Tahoe 26.3
Tahoe
SUSE-SU-2026:4623-1
expat on sles 15.6
Sequoia 15.7.4
Sequoia
Sonoma 14.8.4
Sonoma
ALSA-2025:21776
expat, expat-devel on almalinux 8
RHSA-2025:21776
expat, expat-devel on RHEL 8
ALAS2023-2025-1229
xmlrpc-c, xmlrpc-c-apps, xmlrpc-c-apps-debuginfo and 9 more on amzn 2023
SUSE-SU-2026:1163-1
MozillaThunderbird on opensuse-leap 15.6

Vendor advisory

https://linux.oracle.com/errata/ELSA-2026-10950.html

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