mediawiki 1:1.43.8+dfsg-2: mediawiki 1:1.43.8+dfsg-2 for Ubuntu 26.04.1 LTS (resolute)

mediawiki 1:1.43.8+dfsg-2, released May 11, 2026, fixes 4 CVEs in mediawiki. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0029

21st percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 4
                                Routine 0

Fixed package versions

Product	Release	Fixed in
mediawiki	Ubuntu 26.04.1 LTS (resolute)	1:1.43.8+dfsg-2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-34088	mediawiki: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki	7.5	0.0029	None reported
High	CVE-2026-34091	mediawiki: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki	7.5	0.0029	None reported
High	CVE-2026-34087	mediawiki: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth	7.5	0.0027	None reported
High	CVE-2026-34092	mediawiki: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki	7.5	0.0024	None reported

Also fixes CVE-2026-34091

mediawiki-classes 1:1.43.8+dfsg-2
mediawiki-classes on Ubuntu 26.04.1 LTS (resolute)
DEBIAN-CVE-2026-34091
mediawiki on Debian 13.5 (trixie), Debian 14

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