CyberSecBulletin
CVE-2026-103044NVD status: Awaiting Analysis

Mediawiki - EasyTimeline extension: XML Injection

Published Updated By the CyberSecBulletin desk

CVE-2026-103044 is a critical-severity XML injection vulnerability in Mediawiki - EasyTimeline extension from Wikimedia Foundation, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 1.46.1, 1.45.5, 1.43.10 as the first without the flaw, so updating Mediawiki - EasyTimeline extension to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.44% chance of exploitation within 30 days, which is low compared with other CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Update Mediawiki - EasyTimeline extension to 1.46.1, 1.45.5, 1.43.10 or a later version.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
The Wikimedia FoundationMediawiki - EasyTimeline extensionbefore 1.46.1, 1.45.5, 1.43.101.46.1, 1.45.5, 1.43.10

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).

Official description

XML injection (aka blind XPath injection) vulnerability in The Wikimedia Foundation Mediawiki - EasyTimeline extension allows XML Injection. This issue affects Mediawiki - EasyTimeline extension: before 1.46.1, 1.45.5, 1.43.10.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: XML Injection

The product does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system.

More XML Injection vulnerabilities (CWE-91)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Recent XML Injection vulnerabilities

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