PYSEC-2026-2126
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/changedetection-io/PYSEC-2026-2126.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2126
- Aliases
- Published
- 2026-02-25T05:17:26.940Z
- Modified
- 2026-07-13T07:15:17.062819699Z
- Severity
-
- 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side Request Forgery (SSRF) because the URL validation function
is_safe_valid_url()does not validate the resolved IP address of watch URLs against private, loopback, or link-local address ranges. An authenticated user (or any user when no password is configured, which is the default) can add a watch for internal network URLs. The application fetches these URLs server-side, stores the response content, and makes it viewable through the web UI — enabling full data exfiltration from internal services. Version 0.54.1 contains a fix for the issue. - References
Affected packages
PyPI / changedetection-io
Package
- Name
- changedetection-io
- View open source insights on deps.dev
- Purl
- pkg:pypi/changedetection-io
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.54.1
Affected versions
0.*
0.38.2
0.39
0.39.1
0.39.2
0.39.3
0.39.4
0.39.5
0.39.6
0.39.7
0.39.8
0.39.9
0.39.10
0.39.10.post1
0.39.10.post2
0.39.11
0.39.12
0.39.13
0.39.13.1
0.39.14
0.39.14.1
0.39.15
0.39.16
0.39.17
0.39.17.1
0.39.17.2
0.39.18
0.39.19
0.39.19.1
0.39.20
0.39.20.1
0.39.20.2
0.39.20.3
0.39.20.4
0.39.21
0.39.21.1
0.39.22
0.39.22.1
0.40.0
0.40.0.1
0.40.0.2
0.40.0.3
0.40.0.4
0.40.1.0
0.40.1.1
0.40.2
0.40.3
0.41
0.41.1
0.42
0.42.1
0.42.2
0.42.3
0.43.1
0.43.2
0.44
0.44.1
0.45
0.45.1
0.45.2
0.45.3
0.45.4
0.45.5
0.45.6
0.45.7
0.45.7.1
0.45.7.2
0.45.7.3
0.45.8
0.45.8.1
0.45.9
0.45.11
0.45.12
0.45.13
0.45.14
0.45.15
0.45.16
0.45.17
0.45.18
0.45.19
0.45.20
0.45.21
0.45.22
0.45.23
0.45.24
0.45.25
0.45.26
0.46.0
0.46.1
0.46.2
0.46.3
0.46.4
0.47.0
0.47.1
0.47.2
0.47.3
0.47.4
0.47.5
0.47.6
0.48.0
0.48.1
0.48.2
0.48.3
0.48.4
0.48.5
0.48.6
0.49.0
0.49.1
0.49.2
0.49.3
0.49.4
0.49.5
0.49.6
0.49.7
0.49.8
0.49.9
0.49.10
0.49.12
0.49.13
0.49.14
0.49.15
0.49.16
0.49.17
0.49.18
0.50.1
0.50.2
0.50.3
0.50.4
0.50.5
0.50.6
0.50.7
0.50.8
0.50.9
0.50.10
0.50.11
0.50.12
0.50.13
0.50.14
0.50.15
0.50.16
0.50.17
0.50.18
0.50.19
0.50.20
0.50.21
0.50.22
0.50.23
0.50.24
0.50.25
0.50.26
0.50.27
0.50.28
0.50.29
0.50.30
0.50.31
0.50.32
0.50.33
0.50.34
0.50.35
0.50.37
0.50.38
0.50.39
0.50.40
0.50.41
0.50.42
0.50.43
0.51.0
0.51.1
0.51.2
0.51.3
0.51.4
0.52.1
0.52.2
0.52.3
0.52.4
0.52.5
0.52.6
0.52.7
0.52.8
0.52.9
0.53.1
0.53.2
0.53.3
0.53.4
0.53.5
0.53.6
0.53.7