CVE-2026-5559: Improper Neutralization of Special Elements Used in a Template Engine in AntaresMugisho PyBlade
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.
AI Analysis
Technical Summary
This vulnerability affects the PyBlade template engine component of AntaresMugisho, specifically the _is_safe_ast function responsible for AST validation in sandbox.py. Improper neutralization of special elements used in the template engine allows an attacker to manipulate templates in a way that could lead to unintended behavior or security issues. The vulnerability is exploitable remotely with low attack complexity and no user interaction, and it has been publicly disclosed. The vendor has not yet provided a remediation or patch.
Potential Impact
The vulnerability allows remote attackers with low privileges to exploit improper neutralization in the template engine, potentially leading to security issues such as injection or manipulation of template processing. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor the vendor's advisories for updates. Until a patch is released, consider restricting access to the affected versions and applying any available workarounds or mitigations specific to template input validation if feasible. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-5559: Improper Neutralization of Special Elements Used in a Template Engine in AntaresMugisho PyBlade
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the PyBlade template engine component of AntaresMugisho, specifically the _is_safe_ast function responsible for AST validation in sandbox.py. Improper neutralization of special elements used in the template engine allows an attacker to manipulate templates in a way that could lead to unintended behavior or security issues. The vulnerability is exploitable remotely with low attack complexity and no user interaction, and it has been publicly disclosed. The vendor has not yet provided a remediation or patch.
Potential Impact
The vulnerability allows remote attackers with low privileges to exploit improper neutralization in the template engine, potentially leading to security issues such as injection or manipulation of template processing. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor the vendor's advisories for updates. Until a patch is released, consider restricting access to the affected versions and applying any available workarounds or mitigations specific to template input validation if feasible. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-04T13:54:35.492Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d239c60a160ebd92c92f43
Added to database: 4/5/2026, 10:30:30 AM
Last enriched: 4/12/2026, 3:07:12 PM
Last updated: 5/24/2026, 8:33:41 AM
Views: 64
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