UBUNTU-CVE-2026-92705

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Source
https://ubuntu.com/security/CVE-2026-92705
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92705.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-92705
Upstream
Published
2026-10-13T00:00:00Z
Modified
2026-10-14T03:23:44Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS / aegisub

Package

Name
aegisub
Purl
pkg:deb/ubuntu/aegisub?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2.2+dfsg-2
3.2.2+dfsg-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "aegisub",
            "binary_version":  "3.2.2+dfsg-3"
        },
        {
            "binary_name":  "aegisub-l10n",
            "binary_version":  "3.2.2+dfsg-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92705.json"

Ubuntu:20.04:LTS / aegisub

Package

Name
aegisub
Purl
pkg:deb/ubuntu/aegisub?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2.2+dfsg-4build1
3.2.2+dfsg-5
3.2.2+dfsg-5ubuntu1
3.2.2+dfsg-5ubuntu2
3.2.2+dfsg-5ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "aegisub",
            "binary_version":  "3.2.2+dfsg-5ubuntu3"
        },
        {
            "binary_name":  "aegisub-l10n",
            "binary_version":  "3.2.2+dfsg-5ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92705.json"

Ubuntu:24.04:LTS / aegisub

Package

Name
aegisub
Purl
pkg:deb/ubuntu/aegisub?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2.2+dfsg-7build2
3.2.2+dfsg-7.1
3.2.2+dfsg-7.1build1
3.2.2+dfsg-7.1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "aegisub",
            "binary_version":  "3.2.2+dfsg-7.1build2"
        },
        {
            "binary_name":  "aegisub-l10n",
            "binary_version":  "3.2.2+dfsg-7.1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92705.json"

Ubuntu:26.04:LTS / aegisub

Package

Name
aegisub
Purl
pkg:deb/ubuntu/aegisub?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2.2+dfsg-7.2ubuntu2
3.4.2+ds-1build1
3.4.2+ds-1build2
3.4.2+ds-2
3.4.2+ds-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "aegisub",
            "binary_version":  "3.4.2+ds-3"
        },
        {
            "binary_name":  "aegisub-l10n",
            "binary_version":  "3.4.2+ds-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92705.json"