{"id":"CVE-2026-93421","published":"2026-09-23T19:19:45.140","lastModified":"2026-09-23T20:17:22.503","description":"Mesop is a Python-based UI framework that allows users to build web applications. Prior to 1.3.4, the unauthenticated /__csp__ endpoint passes attacker-controlled document-uri, blocked-uri, and violated-directive values to the csp_report handler in mesop/server/static_file_serving.py, which prints them to standard output without neutralizing terminal control sequences. When an operator views the resulting logs in an ANSI-capable terminal, injected ANSI or VT100 sequences can clear or reposition the display, hide text, or present forged messages, reducing the integrity of monitoring and incident-response output. This issue is fixed in version 1.3.4.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-117","CWE-150"],"vendors":[],"products":[],"references":[{"url":"https://github.com/mesop-dev/mesop/commit/f38c42a1d3eba246941ef8d7f645072d53c58785","tags":[]},{"url":"https://github.com/mesop-dev/mesop/pull/1397","tags":[]},{"url":"https://github.com/mesop-dev/mesop/releases/tag/v1.3.4","tags":[]},{"url":"https://github.com/mesop-dev/mesop/security/advisories/GHSA-g7f6-rxc4-qhph","tags":[]}],"exploitRefs":[{"url":"https://github.com/mesop-dev/mesop/commit/f38c42a1d3eba246941ef8d7f645072d53c58785","tags":[]},{"url":"https://github.com/mesop-dev/mesop/pull/1397","tags":[]},{"url":"https://github.com/mesop-dev/mesop/releases/tag/v1.3.4","tags":[]},{"url":"https://github.com/mesop-dev/mesop/security/advisories/GHSA-g7f6-rxc4-qhph","tags":[]}],"hasPoc":true,"ai":null}