CVE-2026-71285

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Source

https://cve.org/CVERecord?id=CVE-2026-71285

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71285.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-71285

Published

2026-08-05T12:26:30.908Z

Modified

2026-08-07T03:47:04.085059616Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N CVSS Calculator

Summary

Uptime Kuma Stored XSS via Matomo Analytics Site ID on Public Status Pages

Details

Uptime Kuma's Matomo analytics integration (server/analytics/matomo-analytics.js) injects the admin-configurable Matomo siteId value as a bare, unquoted JavaScript expression inside a <script> block rendered on every public status page: _paq.push(['setSiteId', ${escapedSiteIdHTMLAttribute}]);. The escaping pipeline used (jsesc with isScriptContext:true, then html-escaper.escape()) does not escape the characters ], ), ;, (, which are sufficient to break out of the array/push expression context. A siteId value such as 1]);alert(document.cookie)//, once saved by an editor/admin, executes arbitrary JavaScript for every unauthenticated visitor of the public /status/<slug> page, enabling session-cookie theft and full page takeover.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71285.json",
    "cwe_ids": [
        "CWE-79"
    ],
    "cna_assigner": "TuranSec"
}

References

Affected packages

Git / github.com/louislam/uptime-kuma

Affected ranges

Type

GIT

Repo

https://github.com/louislam/uptime-kuma

Events

Introduced

Last affected

9f3b837c8c7f359ec1acee80b3c0430451986a03

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.4.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*

1.0.0

1.0.1

1.0.10

1.0.2

1.0.3

1.0.4

1.0.5

1.0.7

1.0.8

1.0.9

1.1.0

1.10.0

1.10.1

1.10.2

1.11.0

1.11.1

1.11.2

1.11.3

1.11.4

1.12.0

1.12.1

1.14.0-beta.1

1.14.0-beta.2

1.16.0-beta.0

1.17.0

1.17.0-beta.0

1.17.0-beta.1

1.17.1

1.19.0

1.19.0-beta.1

1.19.0-beta.2

1.19.1

1.19.2

1.19.3

1.19.4

1.2.0

1.20.0-beta.0

1.21.0

1.21.0-beta.0

1.21.0-beta.1

1.21.1

1.21.2

1.21.2-beta.0

1.23.0

1.23.0-beta.0

1.23.0-beta.1

1.23.1

1.3.0

1.3.1

1.3.2

1.6.0

1.7.0

1.9.0

1.9.1

2.*

2.0.0

2.0.0-beta.2-temp

2.1.0

2.1.0-beta.0

2.1.0-beta.1

2.1.0-beta.2

2.1.0-beta.3

2.1.1

2.1.2

2.1.3

2.2.0

2.2.1

2.3.0

2.3.1

2.3.2

2.4.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71285.json"