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CVE-2026-126561

7.1, high

SemanticMediaWiki Missing Authorization Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.1, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
11 Nov 2026today

Description

Semantic MediaWiki 2.5.0 before 7.4.1 contains a missing authorization vulnerability that allows editors without the edit-protection right to lock pages by adding an Is edit protected annotation. Attackers can add [[Is edit protected::true]] to pages or #set it in widely transcluded templates, so the TitleQuickPermissions hook blocks other editors and administrators from editing, moving or deleting them indefinitely.

Details

Vendor
SemanticMediaWiki
Product
SemanticMediaWiki
Weakness
CWE-862 (opens in a new tab)
Status
Received
Updated
11 Nov 2026
Assigner
disclosure@vulncheck.com

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

References 5

Patches and fixes 1

Advisories 1

Other references 3

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other SemanticMediaWiki CVEs

Every SemanticMediaWiki CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-126566 SemanticMediaWiki Incorrect Authorization Vulnerability 7.1, high
  • CVE-2026-116871 Semantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that… EPSS 0.4% 7.5, high
  • CVE-2026-116872 Semantic MediaWiki from 3.0.0 before 7.3.1 contains an algorithmic complexity vulnerability in TermParser::normalize_compact_form() that… EPSS 0.4% 7.5, high
  • CVE-2026-116873 SemanticMediaWiki Missing Authorization Vulnerability EPSS 0.2% 7.3, high
  • CVE-2026-116876 SemanticMediaWiki Missing Authorization Vulnerability EPSS 0.2% 7.1, high
  • CVE-2026-116880 SemanticMediaWiki Cross-Site Request Forgery Vulnerability EPSS 0.1% 7.1, high

Beyond this page

Is CVE-2026-126561 in your network?

This page tells you how dangerous CVE-2026-126561 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-126561 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 11 Nov 2026, not the live upstream state.