CVE-2026-92705 Aegisub executes arbitrary code through automatically loaded Automation scripts
Attackers can execute arbitrary code by tricking users into opening malicious subtitle files that automatically load untrusted automation scripts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-92705?
CVE-2026-92705 is a high-severity code injection vulnerability in TypesettingTools Aegisub, published on 9 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-92705?
How do I fix CVE-2026-92705?
No fix has been published for CVE-2026-92705 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-92705 being exploited?
There is no known exploitation of CVE-2026-92705 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-92705, GHSA-67hq-5vgg-6f23, UBUNTU-CVE-2026-92705.