CVE-2026-92705
Published:October 09, 2026
Updated:October 11, 2026
Aegisub is a cross-platform advanced subtitle editor. From 3.2.0 to 3.4.2, Aegisub automatically loads Automation scripts referenced by "Automation Scripts" metadata in "ASS" subtitle projects without asking whether the user trusts the scripts or their authors. An attacker can distribute a crafted "ASS" file together with a referenced malicious Automation script, and opening the "AS" file executes arbitrary code with the privileges of the Aegisub process. From 3.4.0 to 3.4.2, inconsistent handling of embedded "NUL" characters between extension validation and filesystem operations additionally allows a crafted "ASS/Lua" polyglot to reference and execute itself as a single-file variant. The vulnerability is fixed in Aegisub 3.5.0.
Affected Packages
https://github.com/TypesettingTools/Aegisub.git (GITHUB):
Affected version(s) >=v3.2.0 <v3.5.0Fix Suggestion:
Update to version v3.5.0Related Resources (6)
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Contact UsCVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.13