Mozjs52: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. (CVE-2026-92007)
CVE-2026-92007 is a privilege escalation vulnerability in the Graphics: CanvasWebGL component of mozjs52. The issue 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
This vulnerability involves incorrect boundary conditions in the Graphics: CanvasWebGL component of mozjs52, leading to privilege escalation. The flaw was addressed and fixed in Firefox 156 and several ESR and Thunderbird versions as listed. The CVSS 3.1 base score is 8.8, indicating a 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-level access than intended. The high CVSS score reflects significant impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available and has been released 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 fixed versions or later to remediate this vulnerability.
Mozjs52: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. (CVE-2026-92007)
Description
CVE-2026-92007 is a privilege escalation vulnerability in the Graphics: CanvasWebGL component of mozjs52. The issue 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
This vulnerability involves incorrect boundary conditions in the Graphics: CanvasWebGL component of mozjs52, leading to privilege escalation. The flaw was addressed and fixed in Firefox 156 and several ESR and Thunderbird versions as listed. The CVSS 3.1 base score is 8.8, indicating a 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-level access than intended. The high CVSS score reflects significant impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available and has been released 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 fixed versions or later to remediate this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-92007
- 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: 6ab4be40f7a7c54106efcf3c
Added to database: 09/24/2026, 06:08:00 UTC
Last enriched: 09/24/2026, 06:36:57 UTC
Last updated: 09/24/2026, 06:36:57 UTC
Views: 2
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