What’s Vulnerable › Vulnerabilities

CVE-2024-51998: Path traversal using file URI scheme without supplying hostname in changedetection.io

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-08 · updated 2026-06-17
• Weakness: CWE-22

Description

changedetection.io is a free open source web page change detection tool. The validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and `ALLOW_FILE_URI` false or not defined. The check used for URL protocol, `is_safe_url`, allows `file:` as a URL scheme. It later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with `file://`. The issue comes with the fact that the file URI scheme is not required to have double slashes. This issue has been addressed in version 0.47.06 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• dgtlmoon Changedetection.Io: before 0.47.06 — fixed in 0.47.06

How to fix

Upgrade to a fixed version: dgtlmoon Changedetection.Io 0.47.06. Check the vendor advisory for mitigations.

References

• https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13
• https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r

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