CVE-2023-24769: Changedetection.io Stored Cross Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-68wj-c2jw-5pp9
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2023-24769 is a MODERATE (CVSS 5.4) stored 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 stored cross site scripting in changedetection.io. Remediation is available by upgrading affected packages to version 0.40.2.

CVE-2023-24769 at a Glance

CVE Identifier CVE-2023-24769
GHSA Identifier GHSA-68wj-c2jw-5pp9
Severity MODERATE
CVSS v3.1 Base Score 5.4
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

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2023-24769

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: 0.40.2 
pip install changedetection.io>=0.40.2
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-2023-24769, 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 0.40.2), 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

Changedetection.io before 0.40.2 was discovered to contain a stored cross-site scripting (XSS) vulnerability in the main page. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the URL parameter under the "Add a new change detection watch" function.

CVE-2023-24769 Affected Changedetection.io Versions

1 component(s)
Fixed Versions:
0.40.2
Product / Package Ecosystem Affected Versions Fixed Version
changedetection.io
pypi/changedetection.io
PyPI
< 0.40.2
0.40.2

References

NVD — CVE-2023-24769 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-24769
Changedetection.io Source Repository REPOSITORY
https://github.com/dgtlmoon/changedetection.io/issues/1358
Changedetection.io Source Repository REPOSITORY
https://github.com/dgtlmoon/changedetection.io/pull/1359
Changedetection.io Source Repository REPOSITORY
https://github.com/dgtlmoon/changedetection.io
Changedetection.io Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/changedetection-io/PYSEC-2023-10.yaml
www.edoardoottavianelli.it/cve-2023-24769 WEB
https://www.edoardoottavianelli.it/CVE-2023-24769
www.youtube.com/watch WEB
https://www.youtube.com/watch?v=TRTpRlkU3Hc

Frequently Asked Questions

What is CVE-2023-24769?
CVE-2023-24769 is a security vulnerability in Changedetection.io involving Stored cross site scripting in changedetection.io 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 0.40.2 across affected packages: changedetection.io.
What version fixes CVE-2023-24769?
Upgrading to 0.40.2 (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 0.40.2. Upgrade your dependency to 0.40.2 or later.
What is the CVSS score of CVE-2023-24769?
CVE-2023-24769 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2023-24769?
CVE-2023-24769 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-2023-24769?
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-68wj-c2jw-5pp9",
  "modified" : "2025-03-19T15:33:14Z",
  "published" : "2023-02-18T00:31:59Z",
  "aliases" : [ "CVE-2023-24769" ],
  "summary" : "Stored cross site scripting in changedetection.io",
  "details" : "Changedetection.io before 0.40.2 was discovered to contain a stored cross-site scripting (XSS) vulnerability in the main page. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the URL parameter under the \"Add a new change detection watch\" function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "changedetection.io"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.40.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-24769"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dgtlmoon/changedetection.io/issues/1358"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dgtlmoon/changedetection.io/pull/1359"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dgtlmoon/changedetection.io"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/changedetection-io/PYSEC-2023-10.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://www.edoardoottavianelli.it/CVE-2023-24769"
  }, {
    "type" : "WEB",
    "url" : "https://www.youtube.com/watch?v=TRTpRlkU3Hc"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-12T23:33:02Z",
    "nvd_published_at" : "2023-02-17T22:15:00Z"
  }
}