Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-52854

8.6 · HIGH

Maps is a MediaWiki extension that enables visualization of geographic data through dynamic embedded maps.

Published Aug 18, 2026CWE-79EPSS 0.58%

Overview

CVE-2026-52854 is a high-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Maps is a MediaWiki extension that enables visualization of geographic data through dynamic embedded maps. Prior to version 12.1.3, the display_map parser function in the Leaflet service accepts attacker-controlled HTML in the overlays parameter, and resources/leaflet/jquery.leaflet.js uses the overlay name as a Leaflet layer-control label without escaping it. A wiki user with the edit permission can store malicious wikitext that causes script execution when another user previews or views the affected map. The script executes in the viewing user's browser session and can access data or perform actions available to that user. This issue is fixed in version 12.1.3.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/ProfessionalWiki/Maps/blob/12.1.3/RELEASE-NOTES.mdGitHubgithub.com/ProfessionalWiki/Maps/commit/737a993fc2f40499e9bb22198fd1d56c25613806GitHubgithub.com/ProfessionalWiki/Maps/pull/899GitHubgithub.com/ProfessionalWiki/Maps/releases/tag/12.1.3GitHubgithub.com/ProfessionalWiki/Maps/security/advisories/GHSA-4h7g-5542-v3fcGitHubgithub.com/ProfessionalWiki/Maps/security/advisories/GHSA-4h7g-5542-v3fc

How CyberStrike helps

Frequently asked questions

What is CVE-2026-52854?

CVE-2026-52854 is a high-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-52854?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-52854?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-52854?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-52854 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999