Path traversal using file URI scheme without supplying hostname in changedetection.io
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| dgtlmoon | changedetection.io | before 0.47.06 | 0.47.06 | Patch available | CNA |
| — | changedetection.io (PyPI) | before 0.47.6 | 0.47.6 | Patch available | GHSA-6jrf-rcjf-245r |
- changedetection.io Vendordgtlmoon Affected before 0.47.06 Fixed in 0.47.06 Patch available CNA
- changedetection.io (PyPI) Vendor— Affected before 0.47.6 Fixed in 0.47.6 Patch available GHSA-6jrf-rcjf-245r
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dgtlmoon:changedetection.io:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:dgtlmoon:changedetection.io:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
- Fix · CNA changedetection.io (dgtlmoon) Fixed in 0.47.06
- Fix · GHSA-6jrf-rcjf-245r changedetection.io (PyPI) Fixed in 0.47.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-51998
- 2026-10-03 Alias added: GHSA-6jrf-rcjf-245r
References
Other 6
- https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r
- https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f
- https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13
- https://github.com/dgtlmoon/changedetection.io
- https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/processors/__init__.py#L37-L41
- https://github.com/dgtlmoon/changedetection.io/releases/tag/0.47.06
More dgtlmoon vulnerabilities
- TI-2024-21533 Server Side Template Injection in Jinja2 allows Remote Command Execution CVSS 3.1CRITICAL 10.0
- TI-2026-27619 changedetection.io has an Authentication Bypass via Decorator Ordering CVSS 3.1CRITICAL 9.8
- TI-2026-23210 changedetection.io: Zip Slip vulnerability in the backup restore functionality CVSS 4.0HIGH 8.8
- TI-2026-62554 changedetection.io through 0.60.6 SSRF via browser-step Goto URL CVSS 4.0HIGH 8.7
- TI-2026-22073 changedetection.io Vulnerable to Server-Side Request Forgery (SSRF) via Watch URLs CVSS 3.1HIGH 8.6
- TI-2024-37396 changedetection.io has Improper Input Validation Leading to LFR/Path Traversal CVSS 3.1HIGH 8.6
Sources
- CVE-2024-51998 · CVE Program
- CVE-2024-51998 · NVD
- FIRST EPSS
- GHSA-6jrf-rcjf-245r · GitHub Advisory Database · CC BY 4.0
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