---
id: CVE-2026-92705
title: Aegisub is a cross-platform advanced subtitle editor
summary: >-
  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 s…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-158
  - CWE-829
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T21:17:06.360'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92705'
references:
  - url: >-
      https://github.com/TypesettingTools/Aegisub/commit/0a3073d59f10432eeebea65018b02ef4d0a87fff
    label: security-advisories@github.com
  - url: >-
      https://github.com/TypesettingTools/Aegisub/commit/b5bf23979e7453f7b1cc8ffeb82b3cc2d2ca75e6
    label: security-advisories@github.com
  - url: >-
      https://github.com/TypesettingTools/Aegisub/commit/e4099055711cce327840870c050ce46e58f4aee0
    label: security-advisories@github.com
  - url: >-
      https://github.com/TypesettingTools/Aegisub/security/advisories/GHSA-67hq-5vgg-6f23
    label: security-advisories@github.com
tags:
  - nvd
ingestedAt: '2026-10-09T22:14:52.103Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.