CVE-2026-93421
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CVE Descriptions
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.
CVE Informations
Related Weaknesses
| Weakness Name | Source | |
|---|---|---|
| Improper Output Neutralization for Logs The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file. |
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| Improper Neutralization of Escape, Meta, or Control Sequences The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as escape, meta, or control character sequences when they are sent to a downstream component. |
