Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

SummaryThe /csp endpoint accepts unauthenticated JSON reports and logs user-controlled values directly to stdout using print without escaping control characters.A remote attacker can include ANSI/VT100 escape sequences in fields such as blocked-uri or document-uri. When the logs are viewed in an...

PYSEC-2026-4105 Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

Summary The /csp endpoint accepts unauthenticated JSON reports and logs user-controlled values directly to stdout using print without escaping control characters. A remote attacker can include ANSI/VT100 escape sequences in fields such as blocked-uri or document-uri. When the logs are viewed in a...

GHSA-G7F6-RXC4-QHPH Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

Summary The /csp endpoint accepts unauthenticated JSON reports and logs user-controlled values directly to stdout using print without escaping control characters. A remote attacker can include ANSI/VT100 escape sequences in fields such as blocked-uri or document-uri. When the logs are viewed in a...

Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

Summary The /csp endpoint accepts unauthenticated JSON reports and logs user-controlled values directly to stdout using print without escaping control characters. A remote attacker can include ANSI/VT100 escape sequences in fields such as blocked-uri or document-uri. When the logs are viewed in a...

CVE-2026-93421 Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

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 cspreport handler in mesop/server/staticfileserving.py, which prints them ...

CVE-2026-93421 Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

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 cspreport handler in mesop/server/staticfileserving.py, which prints them ...

CVE-2026-93421 Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint

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 cspreport handler in mesop/server/staticfileserving.py, which prints them ...