CVE-2026-8857

NonePublished

Full RCE using EasyTimeline Extension

Published: Jul 1, 2026
Updated: Jul 1, 2026
Assigning CNA: wikimedia-foundation

Primary CVSS

0.0/ 10None

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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:X/V:X/RE:X/U:X

EPSS probability estimate

2.1%

Low · next 30 days

Percentile: 81.5%
Model date: Oct 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

Repository evidence: Files: 1 · Repositories: 1

1 Template

MediaWiki EasyTimeline - Code Injection RCETemplate
http/cves/2026/CVE-2026-8857.yaml
Nuclei Templates
DetectionEvidence observed: Sep 26, 2026Revision: 1f4c3f6568abRelated tool
Declared conditions
- network: http($.protocol_keys)
- verification: dsl,regex,word($.matchers[*].type)

Responsible use

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