---
title: "CVE-2024-32651: changedetection.io has a Server Side Template Injection using Jinja2 which allows Remote Command Execution"
url: https://erroneo.us/security/cve/CVE-2024-32651/
description: "CVE-2024-32651 (changedetection.io (PyPI)): changedetection.io is an open source web page change detection, website watcher, restock monitor and…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-04-25
date_modified: 2025-08-06
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-32651"
kev: false
cvss: 10
epss: 0.83601
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-32651: changedetection.io has a Server Side Template Injection using Jinja2 which allows Remote Command Execution

**Signal:** High exploit likelihood. EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 83.6% , percentile 99.7: FIRST’s model estimates a 83.6% chance of exploitation activity in the next 30 days, higher than 99.7% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes changedetection.io (PyPI) <= 0.45.20, fixed in 0.45.21 . Check your lockfile, including transitive dependencies.

## What it is

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

- PyPI `changedetection.io` <= 0.45.20 → fixed: 0.45.21

## Affected products (CVE record)

- dgtlmoon changedetection.io: <= 0.45.20

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 83.60% probability of exploitation activity in the next 30 days; percentile 99.7.

## Sources

- [GitHub Advisory GHSA-4r7v-whpg-8rx3](https://github.com/advisories/GHSA-4r7v-whpg-8rx3)
- [CVE.org record CVE-2024-32651](https://www.cve.org/CVERecord?id=CVE-2024-32651)
- [NVD entry CVE-2024-32651](https://nvd.nist.gov/vuln/detail/CVE-2024-32651)
- [github.com](https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-4r7v-whpg-8rx3)
- [github.com](https://github.com/dgtlmoon/changedetection.io/releases/tag/0.45.21)
- [onsecurity.io](https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2)
- [blog.hacktivesecurity.com](https://blog.hacktivesecurity.com/index.php/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io/)

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Source page: https://erroneo.us/security/cve/CVE-2024-32651/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt