Is CVE-2026-34092 in the CISA KEV catalog?

No. CVE-2026-34092 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34092?

CVE-2026-34092 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-34092?

CVE-2026-34092 has an EPSS score of 0.24% (14th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-34092

HIGH

7.5

CVSS v3

NVD

Description

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

CWE-200Information Exposure

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.24%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

https://phabricator.wikimedia.org/T384147

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-14.