---
title: "CVE-2026-116890: Semantic MediaWiki - Broken Access Control"
description: "Semantic MediaWiki > 3.0.0 < 7.3.0 contains a missing authorization vulnerability in api.php smwtask module, letting unauthenticated attackers run admin-only maintenance tasks, exploit requires use of public anonymous CSRF token."
url: https://panop.io/threat-heartbeat/CVE-2026-116890/
---

# CVE-2026-116890 Semantic MediaWiki - Broken Access Control

Semantic MediaWiki > 3.0.0 < 7.3.0 contains a missing authorization vulnerability in api.php smwtask module, letting unauthenticated attackers run admin-only maintenance tasks, exploit requires use of public anonymous CSRF token.

CVSS base score 7.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116890)

## Details

Type

Broken Access Control

Impact

Denial Of Service, Data Tampering

CVSS vector

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

Published

27 October 2026

Updated

29 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Update to version 7.3.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-116890](https://nvd.nist.gov/vuln/detail/CVE-2026-116890)
- [https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-jr78-w6w5-m8f8](https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-jr78-w6w5-m8f8)
- [https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.0-missing-authorization-via-smwtask-api](https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.0-missing-authorization-via-smwtask-api)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)