Is CVE-2026-116876 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-116876 being exploited in the wild.

How severe is CVE-2026-116876?

High severity, with a CVSS score of 7.1, published 27 October 2026.

Which products and versions are affected?

Semantic MediaWiki 2.5.0 before 7.3.1.

How is CVE-2026-116876 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-116876?

Check whether you run Semantic MediaWiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-116876: Semantic MediaWiki improper authorization in page protection

CVE-2026-116876 · Severity: high · CVSS 7.1 · Published 2026-10-27

Semantic MediaWiki is a plugin for MediaWiki that enables structured data in wiki pages. Ordinary editors can exploit a missing authorization check to permanently lock pages using the "Is edit protected" annotation, preventing other editors and administrators from accessing content. This requires the optional edit-protection feature to be enabled on the wiki.

Technologies: Semantic MediaWiki. Vendors: Semantic MediaWiki.

Quick answers

Is CVE-2026-116876 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-116876 being exploited in the wild.
How severe is CVE-2026-116876?: High severity, with a CVSS score of 7.1, published 27 October 2026.
Which products and versions are affected?: Semantic MediaWiki 2.5.0 before 7.3.1.
Is there a fix for CVE-2026-116876?: Yes: fixed in 7.3.1. Until then: Disable the optional edit-protection feature by not setting $smwgEditProtectionRight, or restrict it to highly trusted user groups only. Ensure $smwgEditProtectionRight is set to a right held only by curators or administrators, not ordinary editors. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-116876 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-116876?: Check whether you run Semantic MediaWiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 7.3.1

Disable the optional edit-protection feature by not setting $smwgEditProtectionRight, or restrict it to highly trusted user groups only. Ensure $smwgEditProtectionRight is set to a right held only by curators or administrators, not ordinary editors.

Technical details

The vulnerability is an authorization bypass in the EditProtectionUpdater component. When a page edit includes the "Is edit protected::true" annotation, the updater applies indefinite edit and move restrictions without verifying that the author holds the configured smwgEditProtectionRight. An unauthenticated editor can exploit this via a network-based page edit to lock pages indefinitely, requiring the edit-protection feature to be enabled with a configured protection right.

Affected products

Semantic MediaWiki Semantic MediaWiki 2.5.0 before 7.3.1

Timeline

2026-09-28: disclosed
2026-09-28: patched: Fix released in version 7.3.1
2026-10-27: advisory

References

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