changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, there is a reflected cross-site scripting (XSS) vulnerability identified in the /rss/tag/ endpoint of changedetection.io. The tag_uuid path parameter is reflected directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. This issue has been patched in version 0.54.4.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29038.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.54.4"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "ec7d56f85d1e9690fca7cb4711c1fb20dffec780"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "0.54.4",
"range": [
{
"fixed": "1e12ae404fc7b609de00f3b4e97cc6402c60fc71"
}
],
"source": "REFERENCES_TAG"
}
]
}