Privilege escalation in the DOM: Service Workers component. (CVE-2026-92017)
CVE-2026-92017 is a high-severity privilege escalation vulnerability in the DOM Service Workers component of Mozilla Firefox. This flaw allows an attacker to escalate privileges within the browser environment. The vulnerability has been fixed in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. The CVSS v3.1 base score is 8.8, indicating a critical impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
AI Analysis
Technical Summary
CVE-2026-92017 is a privilege escalation vulnerability affecting the DOM Service Workers component in Firefox. The flaw could allow an attacker to gain elevated privileges within the browser context. Mozilla addressed this issue by releasing patches in Firefox 156 and Firefox ESR 115.41, 140.16, and 153.3. The vulnerability has a CVSS 3.1 base score of 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 within the Firefox browser, potentially leading to unauthorized access or control over browser functions and data. The high CVSS score reflects the significant impact on confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
This vulnerability has been fixed by Mozilla in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation actions are required once the update is applied.
Privilege escalation in the DOM: Service Workers component. (CVE-2026-92017)
Description
CVE-2026-92017 is a high-severity privilege escalation vulnerability in the DOM Service Workers component of Mozilla Firefox. This flaw allows an attacker to escalate privileges within the browser environment. The vulnerability has been fixed in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. The CVSS v3.1 base score is 8.8, indicating a critical impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
CVSS v3.1
Score 8.8high
Affected software
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92017 is a privilege escalation vulnerability affecting the DOM Service Workers component in Firefox. The flaw could allow an attacker to gain elevated privileges within the browser context. Mozilla addressed this issue by releasing patches in Firefox 156 and Firefox ESR 115.41, 140.16, and 153.3. The vulnerability has a CVSS 3.1 base score of 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 within the Firefox browser, potentially leading to unauthorized access or control over browser functions and data. The high CVSS score reflects the significant impact on confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
This vulnerability has been fixed by Mozilla in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation actions are required once the update is applied.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jq8g-rpr7-39xm
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92017"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa081155bf5e2cf5ea4839
Added to database: 09/16/2026, 03:08:01 UTC
Last enriched: 09/16/2026, 05:06:30 UTC
Last updated: 09/16/2026, 05:06:30 UTC
Views: 5
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