High severity8.1NVD Advisory· Published Aug 5, 2026· Updated Aug 26, 2026

CVE-2026-71285

Description

Uptime Kuma's Matomo analytics integration (server/analytics/matomo-analytics.js) injects the admin-configurable Matomo value as a bare, unquoted JavaScript expression inside a block rendered on every public status page. A siteId value such as , once saved by an editor/admin, executes arbitrary JavaScript for every unauthenticated visitor of the public /status/ page, enabling session-cookie theft and full page takeover.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Uptime.kuma/Uptime Kumallm-fuzzy

Patches

Vulnerability mechanics

References

github.com/louislam/uptime-kuma/blob/master/server/analytics/matomo-analytics.jsnvd

News mentions

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