CVE-2026-5559

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.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/AntaresMugisho/PyBlade/
https://github.com/AntaresMugisho/PyBlade/issues/1
https://github.com/AntaresMugisho/PyBlade/issues/1#issue-4086730906
https://vuldb.com/submit/782904
https://vuldb.com/vuln/355329
https://vuldb.com/vuln/355329/cti

Configurations

No configuration.

History

05 Apr 2026, 11:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-05 11:16

Updated : 2026-04-29 01:00

NVD link : CVE-2026-5559

Mitre link : CVE-2026-5559

CVE.ORG link : CVE-2026-5559

JSON object : View

Products Affected

No product.

CWE

CWE-791

Incomplete Filtering of Special Elements

CWE-1336

Improper Neutralization of Special Elements Used in a Template Engine

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