CVE-2026-5559 MEDIUM

CVE-2026-5559: AntaresMugisho PyBlade AST Validation sandbox.py _is_safe_ast special elements used in a template engine

Vendor Antaresmugisho
Product PyBlade
Weakness CWE-1336
Published April 5, 2026
Last update April 6, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 5, 2026 CVE published
April 6, 2026 Record updated

Related vulnerabilities

04Related CVE