Description
changedetection.io is an open source web page change detection, website watcher, restock monitor and notification service. There is a Server Side Template Injection (SSTI) in Jinja2 that allows Remote Command Execution on the server host. Attackers can run any system command without any restriction and they could use a reverse shell. The impact is critical as the attacker can completely takeover the server machine. This can be reduced if changedetection is behind a login page, but this isn't required by the application (not by default and not enforced).
Metrics
CVSS 3.1 10.0/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| dgtlmoon | changedetection.io | <= 0.45.20 |
| dgtlmoon | changedetection.io | 0.45.20 |
References
- https://blog.hacktivesecurity.com/index.php/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io/
- https://github.com/dgtlmoon/changedetection.io/releases/tag/0.45.21
- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-4r7v-whpg-8rx3
- https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2
- https://blog.hacktivesecurity.com/index.php/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io/
- https://github.com/dgtlmoon/changedetection.io/releases/tag/0.45.21
- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-4r7v-whpg-8rx3
- https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2
Timeline
- Published
- Apr 26, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Deferred