Quick answers
- Is CVE-2026-116873 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-116873 being exploited in the wild.
- How severe is CVE-2026-116873?
- High severity, with a CVSS score of 7.3, published 27 October 2026.
- Which products and versions are affected?
- Semantic MediaWiki 7.3.0 before 7.3.1.
- Is there a fix for CVE-2026-116873?
- Yes: fixed in 7.3.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-116873 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-116873?
- 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
Technical details
The smwtask API module in version 7.3.0 declares that the run-joblist, check-query, and update operations require only the "edit" right, which anonymous users hold by default in MediaWiki. An unauthenticated caller can exploit the fixed public CSRF token (+\) to invoke run-joblist with any caller-supplied job map and unlimited counts, or force a semantic store update on any page title, including sysop-protected pages, without permission checks. The vulnerability is an incomplete fix of a prior authorization issue (GHSA-jr78-w6w5-m8f8).
Affected products
- Semantic MediaWiki Semantic MediaWiki 7.3.0 before 7.3.1
Timeline
- 2026-09-28: disclosed
- 2026-10-27: advisory