WS-2019-0064
Published:May 19, 2026
Updated:October 07, 2026
Versions of handlebars prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.
Affected Packages
flask-apispec (CONDA):
Affected version(s) =0.3.2 <0.4.0Fix Suggestion:
Update to version 0.4.0svgsynoptic2 (CONDA):
Affected version(s) >=4.0.0 <4.1.4Fix Suggestion:
Update to version 4.1.4connexion (CONDA):
Affected version(s) >=1.1.10 <2.3.0Fix Suggestion:
Update to version 2.3.0flask-apispec (CONDA):
Affected version(s) >=0.4.2 <0.7.0Fix Suggestion:
Update to version 0.7.0flask-restful-swagger (CONDA):
Affected version(s) =0.20.2Fix Suggestion:
Update to version no_fixbokeh (CONDA):
Affected version(s) >=0.8.0 <0.9.0Fix Suggestion:
Update to version 0.9.0flask-apispec (PYTHON):
Affected version(s) >=0.4.2 <0.7.0Fix Suggestion:
Update to version 0.7.0flask-restful-swagger (PYTHON):
Affected version(s) =0.20.2Fix Suggestion:
Update to version no_fixsvgsynoptic2 (PYTHON):
Affected version(s) >=4.0.0 <4.1.4Fix Suggestion:
Update to version 4.1.4connexion (PYTHON):
Affected version(s) >=1.1.10 <2.3.0Fix Suggestion:
Update to version 2.3.0flask-apispec (PYTHON):
Affected version(s) =0.3.2 <0.4.0Fix Suggestion:
Update to version 0.4.0bokeh (PYTHON):
Affected version(s) >=0.8.0 <0.9.0Fix Suggestion:
Update to version 0.9.0Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW