CVE-2026-5559

MEDIUM

AntaresMugisho PyBlade AST Validation sandbox.py _is_safe_ast special elements used in a template engine

Title source: cna
STIX 2.1

Description

A vulnerability has been found in AntaresMugisho PyBlade 0.1.8-alpha/0.1.9-alpha. The affected element is the function _is_safe_ast of the file sandbox.py of the component AST Validation. Such manipulation leads to improper neutralization of special elements used in a template engine. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-355329 | AntaresMugisho PyBlade AST Validation sandbox.py _is_safe_ast special elements used in a template engine
https://vuldb.com/vuln/355329
Signature, Permissions Required signature permissions-required
VDB-355329 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/355329/cti
Third Party Advisory third-party-advisory
Submit #782904 | AntaresMugisho PyBlade v0.1.8-alpha through v0.2.0-alph Code Injection
https://vuldb.com/submit/782904

Scores

CVSS v3 6.3
EPSS 0.0031
EPSS Percentile 22.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-1336 CWE-791
Status published
Products (3)
AntaresMugisho/PyBlade 0.1.8-alpha
AntaresMugisho/PyBlade 0.1.9-alpha
pypi/pyblade 0.1.8-alphaPyPI
Published Apr 05, 2026
Tracked Since Apr 05, 2026