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CVE-2026-93421 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/mesop-dev/mesop/commit/f38c42a1d3eba246941ef8d7f645072d53c58785	[email protected]
https://github.com/mesop-dev/mesop/pull/1397	[email protected]
https://github.com/mesop-dev/mesop/releases/tag/v1.3.4	[email protected]
https://github.com/mesop-dev/mesop/security/advisories/GHSA-g7f6-rxc4-qhph	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-117	Improper Output Neutralization for Logs	[email protected]
CWE-150	Improper Neutralization of Escape, Meta, or Control Sequences	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 23, 2026	CVE Modified	CISA-ADP
Sep 23, 2026	New CVE Received	[email protected]