CVE-2026-8857

HIGH

Wikimedia Foundation timeline - Full RCE Using EasyTimeline Extension

Title source: rule

Description

A vulnerability in Wikimedia Foundation timeline. This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php. This issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

References (1)

Core 1

Core References

https://phabricator.wikimedia.org/T426631

Scores

CVSS v3 8.8

EPSS 0.0033

EPSS Percentile 25.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-94

Status published

Products (2)

mediawiki/mediawiki 1.43.0 - 1.43.9

Wikimedia Foundation/timeline < 1.46.0, 1.45.4, 1.44.6, 1.43.9

Published Jul 01, 2026

Tracked Since Jul 01, 2026