CVE-2026-33054

Published: Mar 20, 2026 Last Modified: Mar 20, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 10,0
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted state_token through the UI stream payload to arbitrarily target files on the disk under the standard file-based runtime backend. This can result in application denial of service (via crash loops when reading non-msgpack target files as configurations), or arbitrary file manipulation. This vulnerability heavily exposes systems hosted utilizing FileStateSessionBackend. Unauthorized malicious actors could interact with arbitrary payloads overwriting or explicitly removing underlying service resources natively outside the application bounds. This issue has been fixed in version 1.2.3.

22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Modify Files Or Directories Read Files Or Directories Dos: Crash, Exit, Or Restart
Applicable Platforms
Technologies: AI/ML
Likelihood of Exploit: High
View CWE Details
https://github.com/mesop-dev/mesop/commit/c6b382f363b73ac32…
https://github.com/mesop-dev/mesop/commit/c6b382f363b73ac32c402a2db3aadc7784f66…
https://github.com/mesop-dev/mesop/releases/tag/v1.2.3
https://github.com/mesop-dev/mesop/releases/tag/v1.2.3
https://github.com/mesop-dev/mesop/security/advisories/GHSA…
https://github.com/mesop-dev/mesop/security/advisories/GHSA-8qvf-mr4w-9x2c