Vulnerability · Published Apr 25, 2024 · Assigned by GitHub_M
CVE-2024-32651Server Side Template Injection in Jinja2 allows Remote Command Execution
Critical 10.0
In plain English
A critical-severity security flaw in changedetection.io from dgtlmoon. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 85.3% (higher than 99.7% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | changedetection-io | 0.45.21 | GHSA-4r7v-whpg-8rx3 |
| PyPI | changedetection-io | 0.45.21 | PYSEC-2026-310 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| dgtlmoon | changedetection.io | <= 0.45.20 |
Weakness: CWE-1336 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-4r7v-whpg-8rx3 x_refsource_CONFIRM
- https://github.com/dgtlmoon/changedetection.io/releases/tag/0.45.21 x_refsource_MISC
- https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2 x_refsource_MISC
- https://blog.hacktivesecurity.com/index.php/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io/