CVE-2026-5266

Echo API Exposure of Sensitive Information to Unauthorized Actors

Published May 11, 2026 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo.

This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php.



This issue affects Echo: from * before 1.43.7, 1.44.4, 1.45.2.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6208-1 mediawiki security update
References
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia echo
Vendors & Products Wikimedia
Wikimedia echo
Type Values Removed Values Added
Title Echo API Exposure of Sensitive Information to Unauthorized Actors
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo. This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php. This issue affects Echo: from * before 1.43.7, 1.44.4, 1.45.2.
Weaknesses CWE-200
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
May 11, 2026, 6:00 PM
Reserved
Mar 31, 2026, 6:45 PM
Status
Awaiting Analysis
Published
May 11, 2026, 6:16 PM
Modified
Oct 26, 2026, 12:10 AM