← Vulnerability feed

Vulnerability record · CVE-2026-33057 · published 20 March 2026

CVE-2026-33057: Mesop-dev mesop code injection vulnerability

MMesop Dev · Mesop

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard Unrestricted Remote Code Execution. Any individual capable of routing HTTP logic to this server block will gain explicit host-machine command rights. The AI codebase package includes a lightweight debugging Flask server inside ai/sandbox/wsgi_app.py. The /exec-py route accepts base_64 encoded raw string payloads inside the code parameter natively evaluated by a basic POST web request. It saves it rapidly to the operating system logic path and injects it recursively using execute_module(module_path...). This issue has been fixed in version 1.2.3.

9.8 CVSS 3.1 Critical EPSS 4.1% · top 9.6% CWE-94 · Code injection
9.8CVSS 3.1 base score
4.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard Unrestricted Remote Code Execution. Any individual capable of routing HTTP logic to this server block will gain explicit host-machine command rights. The AI codebase package includes a lightweight debugging Flask server inside ai/sandbox/wsgi_app.py. The /exec-py route accepts base_64 encoded raw string payloads inside the code parameter natively evaluated by a basic POST web request. It saves it rapidly to the operating system logic path and injects it recursively using execute_module(module_path...). This issue has been fixed in version 1.2.3.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mesop-dev/mesop/commit/825f55970c20686de3f28e2c66df4d74e9d4db47 Patch
https://github.com/mesop-dev/mesop/security/advisories/GHSA-gjgx-rvqr-6w6v Vendor Advisory

Track CVE-2026-33057 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-33054Mesop-dev mesop path traversal vulnerabilityMesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability tha…EPSS 0.70%7.5CVE-2026-34824Mesop-dev mesop out-of-bounds read vulnerabilityMesop is a Python-based UI framework that allows users to build web applications. From version 1.2.3 to before version 1.2.5, an uncontrolled resourc…EPSS 0.67%8.8CVE-2026-65660Microsoft sharepoint server code injection vulnerabilityImproper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.KEVEPSS 2.1%9.8CVE-2026-60004Gitea diffpatch API code injection enables remote code executionGitea before 1.27.1 allows remote code execution through the diffpatch API by way of Git hook installation. The flaw is a code injection issue (CWE-9…KEVEPSS 24%analysed9.5CVE-2026-72530TrueConf Server sandbox breakout via crafted script code injectionTrueConf Server versions 5.3.X through 5.3.9, 5.4.X through 5.4.9, 5.5.X through 5.5.5 and earlier allow a remote unauthenticated attacker to break o…KEVEPSS 1.7%analysed9.4CVE-2025-62593Ray browser-based RCE via insufficient User-Agent guardRay, an AI compute engine, contains a critical remote code execution flaw before version 2.52.0. Its defense against browser-based attacks relies on …KEVEPSS 62%analysed9.8CVE-2026-9198Langflow auto_login and code validation chain enables unauthenticated RCEIBM Langflow OSS 1.0.0 through 1.10.0 exposes /api/v1/auto_login, which mints SUPERUSER tokens to any network caller, and /api/v1/validate/code, whic…KEVEPSS 29%analysed7.2CVE-2026-15410SonicWall SMA1000 AMC code injection allows OS command executionThe SMA1000 Appliance Management Console (AMC) contains a post-authentication code injection flaw (CWE-94) that, under specific conditions, lets an a…KEVEPSS 12%analysed

Source: NIST National Vulnerability Database (record CVE-2026-33057), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.