{"id":"PYSEC-2026-1243","summary":"changedetection.io Cross-site Scripting vulnerability","details":"### Summary\n\nInput in parameter notification_urls is not processed resulting in javascript execution in the application\n\n### Details\nchangedetection.io version: v0.45.21\n\nhttps://github.com/dgtlmoon/changedetection.io/blob/0.45.21/changedetectionio/forms.py#L226\n\n```\n        for server_url in field.data:\n            if not apobj.add(server_url):\n                message = field.gettext('\\'%s\\' is not a valid AppRise URL.' % (server_url))\n                raise ValidationError(message)\n```\n\n### PoC\n\nSetting \u003e ADD Notification URL List\n\n![image](https://github.com/dgtlmoon/changedetection.io/assets/65381453/626eb43b-a414-4b05-92d8-c7345c2a2e75)\n\n\n```\n\"\u003e\u003cimg src=x onerror=alert(document.domain)\u003e\n```\n![image](https://github.com/dgtlmoon/changedetection.io/assets/65381453/476bd396-2aa2-4642-9c54-fd2c2ef9de79)\n\nRequests\n\n![image](https://github.com/dgtlmoon/changedetection.io/assets/65381453/1f258ef1-149a-4a03-88ab-a2244a69652e)\n\n\n### Impact\nA reflected XSS vulnerability happens when the user input from a URL or POST data is reflected on the page without being stored, thus allowing the attacker to inject malicious content\n","aliases":["CVE-2024-34061","GHSA-pwgc-w4x9-gw67"],"modified":"2026-07-07T17:47:27.123858480Z","published":"2026-07-07T11:45:40.964806Z","references":[{"type":"WEB","url":"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-pwgc-w4x9-gw67"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34061"},{"type":"WEB","url":"https://github.com/dgtlmoon/changedetection.io/commit/c0f000b1d1ce03733460805dbbedde445fe2c762"},{"type":"PACKAGE","url":"https://github.com/dgtlmoon/changedetection.io"},{"type":"WEB","url":"https://github.com/dgtlmoon/changedetection.io/blob/0.45.21/changedetectionio/forms.py#L226"},{"type":"PACKAGE","url":"https://pypi.org/project/changedetection-io"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-pwgc-w4x9-gw67"}],"affected":[{"package":{"name":"changedetection-io","ecosystem":"PyPI","purl":"pkg:pypi/changedetection-io"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.45.22"}]}],"versions":["0.38.2","0.39","0.39.1","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","0.39.2","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","0.39.3","0.39.4","0.39.5","0.39.6","0.39.7","0.39.8","0.39.9","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","0.45.11","0.45.12","0.45.13","0.45.14","0.45.15","0.45.16","0.45.17","0.45.18","0.45.19","0.45.2","0.45.20","0.45.21","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"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/changedetection-io/PYSEC-2026-1243.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}