CVE-2026-33130

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Source
https://cve.org/CVERecord?id=CVE-2026-33130
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33130.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33130
Related
Published
2026-03-20T09:50:55.124Z
Modified
2026-04-10T05:42:37.982143Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Uptime Kuma: SSTI in Notification Templates Allows Arbitrary File Read (Incomplete Fix for GHSA-vffh-c9pq-4crh)
Details

Uptime Kuma is an open source, self-hosted monitoring tool. In versions 1.23.0 through 2.2.0, the fix from GHSA-vffh-c9pq-4crh doesn't fully work to preventServer-side Template Injection (SSTI). The three mitigations added to the Liquid engine (root, relativeReference, dynamicPartials) only block quoted paths. If a project uses an unquoted absolute path, attackers can still read any file on the server. The original fix in notification-provider.js only constrains the first two steps of LiquidJS's file resolution (via root, relativeReference, and dynamicPartials options), but the third step, the require.resolve() fallback in liquid.node.js has no containment check, allowing unquoted absolute paths like /etc/passwd to resolve successfully. Quoted paths happen to be blocked only because the literal quote characters cause require.resolve('"/etc/passwd"') to throw a MODULENOTFOUND error, not because of any intentional security measure. This issue has been fixed in version 2.2.1.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33130.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1336",
        "CWE-98"
    ]
}
References

Affected packages

Git / github.com/louislam/uptime-kuma

Affected ranges

Type
GIT
Repo
https://github.com/louislam/uptime-kuma
Events
Introduced
9564550d5fd01daade5b9d0935ca2ac065ea1068
Fixed
3752a59f72a4e1b89f5bd1d835918d13f6aa8140

Affected versions

1.*
1.23.0
1.23.1
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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33130.json"