CVE-2023-25810 — Uptime Kuma is a self-hosted monitoring tool

Uptime Kuma is a self-hosted monitoring tool. In versions prior to 1.20.0 the Uptime Kuma status page allows a persistent XSS attack. Users are advised to upgrade. There are no known workarounds for this vulnerability.

01What is this vulnerability?

Uptime Kuma is a self-hosted monitoring tool. In versions prior to 1.20.0 the Uptime Kuma status page allows a persistent XSS attack. Users are advised to upgrade. There are no known workarounds for this vulnerability.

02Affected products

Vendor	Product	Versions
louislam	uptime	kuma — < 1.20.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-02-21T20:45:38.072Z
• Last modified: 2025-03-10T21:07:41.199Z

09References

• github.com — https://github.com/louislam/uptime-kuma/security/advisories/GHSA-wh8j-xr66-f296