CVE-2026-77139
Published:August 25, 2026
Updated:September 24, 2026
The extension fails to validate a client-supplied template element key before using it to build file paths for saving and deleting Mask template files. An authenticated backend user with access to the Mask module can supply a key containing path traversal sequences to create or delete .html files outside the configured template directory.
Affected Packages
https://github.com/Gernott/mask.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.0.11Fix Suggestion:
Update to version v9.0.11https://github.com/Gernott/mask.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.3.12Fix Suggestion:
Update to version v8.3.12mask/mask (PHP):
Affected version(s) >=v8.0.0 <v8.3.12Fix Suggestion:
Update to version v8.3.12mask/mask (PHP):
Affected version(s) >=v9.0.0 <v9.0.11Fix Suggestion:
Update to version v9.0.11Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
0.29