Vulnerability · Published Nov 7, 2024 · Assigned by GitHub_M
CVE-2024-51998Path traversal using file URI scheme without supplying hostname in changedetection.io
High 8.6
In plain English
A high-severity path traversal 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 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | changedetection-io | 0.47.6 | GHSA-6jrf-rcjf-245r |
| PyPI | changedetection-io | 0.47.6 | PYSEC-2026-1239 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| dgtlmoon | changedetection.io | < 0.47.06 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r x_refsource_CONFIRM
- https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f x_refsource_MISC
- https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13 x_refsource_MISC