Mozjs52: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. (CVE-2026-92006)
CVE-2026-92006 is a privilege escalation vulnerability in the Graphics: CanvasWebGL component of mozjs52. It arises from incorrect boundary conditions that could allow an attacker to escalate privileges. This vulnerability has been fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
AI Analysis
Technical Summary
The vulnerability CVE-2026-92006 involves incorrect boundary conditions in the Graphics: CanvasWebGL component of mozjs52, leading to privilege escalation. The issue was addressed and fixed in Firefox 156 and corresponding ESR and Thunderbird versions. The CVSS v3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges, potentially gaining higher access rights than intended. The CVSS score of 8.8 reflects a high impact on confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A fix for this vulnerability is available and has been incorporated in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3. Users and administrators should update to these versions or later to mitigate the risk. No additional mitigation actions are specified by the vendor advisory.
Mozjs52: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. (CVE-2026-92006)
Description
CVE-2026-92006 is a privilege escalation vulnerability in the Graphics: CanvasWebGL component of mozjs52. It arises from incorrect boundary conditions that could allow an attacker to escalate privileges. This vulnerability has been fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
CVSS v3.1
Score 8.8high
Affected software
pkg:deb/ubuntu/mozjs52?arch=source&distro=bionicpkg:deb/ubuntu/mozjs38?arch=source&distro=bionicpkg:deb/ubuntu/mozjs68?arch=source&distro=focalpkg:deb/ubuntu/mozjs52?arch=source&distro=focalpkg:deb/ubuntu/mozjs102?arch=source&distro=jammypkg:deb/ubuntu/mozjs78?arch=source&distro=jammypkg:deb/ubuntu/mozjs91?arch=source&distro=jammypkg:deb/ubuntu/thunderbird?arch=source&distro=jammypkg:deb/ubuntu/mozjs102?arch=source&distro=noblepkg:deb/ubuntu/mozjs115?arch=source&distro=nobleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-92006 involves incorrect boundary conditions in the Graphics: CanvasWebGL component of mozjs52, leading to privilege escalation. The issue was addressed and fixed in Firefox 156 and corresponding ESR and Thunderbird versions. The CVSS v3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges, potentially gaining higher access rights than intended. The CVSS score of 8.8 reflects a high impact on confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A fix for this vulnerability is available and has been incorporated in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3. Users and administrators should update to these versions or later to mitigate the risk. No additional mitigation actions are specified by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-92006
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab4be42f7a7c54106f003d7
Added to database: 09/24/2026, 06:08:02 UTC
Last enriched: 09/24/2026, 06:37:23 UTC
Last updated: 09/24/2026, 06:37:23 UTC
Views: 2
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