CVE-2026-92705

Name	CVE-2026-92705
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1150511

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
aegisub (PTS)	bookworm	3.2.2+dfsg-7	vulnerable
	trixie	3.2.2+dfsg-7.3	vulnerable
	forky, sid	3.4.2+ds-5	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
aegisub	source	(unstable)	(unfixed)			1150511

Notes

https://github.com/TypesettingTools/Aegisub/security/advisories/GHSA-67hq-5vgg-6f23
Fixed by: https://github.com/TypesettingTools/Aegisub/commit/0a3073d59f10432eeebea65018b02ef4d0a87fff (v3.5.0-beta)
Fixed by: https://github.com/TypesettingTools/Aegisub/commit/b5bf23979e7453f7b1cc8ffeb82b3cc2d2ca75e6 (v3.5.0-beta)
Fixed by: https://github.com/TypesettingTools/Aegisub/commit/e4099055711cce327840870c050ce46e58f4aee0 (v3.5.0-beta)