UBUNTU-CVE-2026-34091

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Source

https://ubuntu.com/security/CVE-2026-34091

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34091.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-34091

Upstream

CVE-2026-34091

Published

2026-05-11T16:17:00Z

Modified

2026-05-26T07:30:15Z

Severity

5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/R:U CVSS Calculator
7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

References

Affected packages

Ubuntu:25.10 / mediawiki

Package

Name: mediawiki
Purl: pkg:deb/ubuntu/mediawiki?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*

1:1.43.1+dfsg-1

1:1.43.1+dfsg-2

1:1.43.3+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.43.3+dfsg-1"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.43.3+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34091.json"

Ubuntu:26.04:LTS / mediawiki