CVE-2026-27645

changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, the RSS single-watch endpoint reflects the UUID path parameter 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. Version 0.54.1 contains a fix for the issue.

• CWE-79

• https://github.com/dgtlmoon/changedetection.io/commit/a385c89abf44b52fcfa20c7c6a6dd3047c4c1eb5Patch
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89wExploit, Vendor Advisory
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89wExploit, Vendor Advisory

Published

Feb 25, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-2764JIT miscompilation, use-after-free in the JavaScript Engine:…9.8
• CVE-2026-27640tfplan2md is software for converting Terraform plan JSON fil…7.5
• CVE-2026-27641Flask-Reuploaded provides file uploads for Flask. A critical…9.8
• CVE-2026-27642free5gc UDM provides Unified Data Management (UDM) for free5…7.5
• CVE-2026-27643free5GC UDR is the user data repository (UDR) for free5GC, a…5.3
• CVE-2026-27644Traccar is an open source GPS tracking system. In versions b…6.5
• CVE-2026-27646OpenClaw versions prior to 2026.3.7 contain a sandbox escape…6.1
• CVE-2026-27647The WebSocket backend uses charging station identifiers to u…9.8
• CVE-2026-27648in OpenHarmony v6.0 and prior versions allow a remote attack…8.8
• CVE-2026-27649The WebSocket backend uses charging station identifiers to u…6.5
• CVE-2026-2765Use-after-free in the JavaScript Engine component. This vuln…9.8
• CVE-2026-27650OS Command Injection vulnerability exists in BUFFALO Wi-Fi r…9.8