CVE-2025-52558: Changedetection.io Cross-Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-hwpg-x5hw-vpv9
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CWE-79
Published
Advisory Summary

CVE-2025-52558 is a HIGH cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Changedetection.io libraries in the PyPI ecosystem. The issue involves changedetection.io xss in watch overview. Remediation is available by upgrading affected packages to version 0.50.4.

CVE-2025-52558 at a Glance

CVE Identifier CVE-2025-52558
GHSA Identifier GHSA-hwpg-x5hw-vpv9
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Changedetection.io
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2025-52558

To remediate this vulnerability, upgrade all affected Changedetection.io dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

changedetection.io fixed: 0.50.4 
pip install changedetection.io>=0.50.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show changedetection.io

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-52558, inspect your installed packages using pip:

pip show changedetection.io

Analyze the terminal output to locate any version of Changedetection.io in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.50.4), your application is affected.

Note: The pip show changedetection.io command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Changedetection.io, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact XSS - Errors in filters from website page change detection watches were not being filtered. ### Patches 0.50.4

CVE-2025-52558 Affected Changedetection.io Versions

1 component(s)
Fixed Versions:
0.50.4
Product / Package Ecosystem Affected Versions Fixed Version
changedetection.io
pypi/changedetection.io
PyPI
< 0.50.4
0.50.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-hwpg-x5hw-vpv9
NVD — CVE-2025-52558 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52558
Security Fix Commit FIX COMMIT
https://github.com/dgtlmoon/changedetection.io/commit/3d5a544ea674cfce517adcd498877a8d760d0931
Changedetection.io Source Repository REPOSITORY
https://github.com/dgtlmoon/changedetection.io

Frequently Asked Questions

What is CVE-2025-52558?
CVE-2025-52558 is a security vulnerability in Changedetection.io involving ChangeDetection.io XSS in watch overview under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Changedetection.io versions are affected?
Affected versions include releases prior to 0.50.4 across affected packages: changedetection.io.
What version fixes CVE-2025-52558?
Upgrading to 0.50.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is changedetection.io affected?
Yes, changedetection.io is affected in releases prior to 0.50.4. Upgrade your dependency to 0.50.4 or later.
What CWE is associated with CVE-2025-52558?
CVE-2025-52558 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check PyPI dependencies for CVE-2025-52558?
Run the dependency tree command: 'pip show changedetection.io'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hwpg-x5hw-vpv9",
  "modified" : "2025-06-27T23:06:27Z",
  "published" : "2025-06-23T21:21:41Z",
  "aliases" : [ "CVE-2025-52558" ],
  "summary" : "ChangeDetection.io XSS in watch overview",
  "details" : "### Impact\nXSS - Errors in filters from website page change detection watches were not being filtered.\n\n### Patches\n\n0.50.4",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "changedetection.io"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.50.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.50.3"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-hwpg-x5hw-vpv9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-52558"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dgtlmoon/changedetection.io/commit/3d5a544ea674cfce517adcd498877a8d760d0931"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dgtlmoon/changedetection.io"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-23T21:21:41Z",
    "nvd_published_at" : "2025-06-23T21:15:26Z"
  }
}