CVE-2026-34093

Name: CVE-2026-34093
Creator: NVD / NIST
Published: 2026-05-11T18:16:31.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.1/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2026-34093 is a low-severity vulnerability rated 1.1/10 on the CVSS scale. Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS 4.0

1.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:X/U:X

EPSS Probability

0.23%

13.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.43.7
Mediawiki	Mediawiki	>= 1.44.0, < 1.44.4
Mediawiki	Mediawiki	>= 1.45.0, < 1.45.2

References

https://phabricator.wikimedia.org/T414547Issue Tracking, Permissions Required, Vendor Advisory

Timeline

Published: May 11, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34093?

How severe is CVE-2026-34093?

CVE-2026-34093 has a CVSS score of 1.1/10 (LOW severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34093?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34093?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST