Use-after-free in the XML component. (CVE-2026-92023)
CVE-2026-92023 is a use-after-free vulnerability in the XML component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. The vulnerability is classified with high impact by the vendor.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the XML component of Firefox, which could potentially lead to memory corruption or other security issues. Mozilla fixed this issue in Firefox 156 and the corresponding ESR releases 115.41, 140.16, and 153.3. The advisory classifies the impact as high, indicating a serious security concern. The fix is officially available in these versions.
Potential Impact
The vulnerability is rated as high impact by Mozilla, indicating that exploitation could lead to significant security consequences such as memory corruption. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Users should update to Firefox 156 or Firefox ESR 115.41, 140.16, or 153.3 to remediate this vulnerability. The vendor has provided official fixes in these versions. No additional mitigation steps are indicated beyond applying the update.
Use-after-free in the XML component. (CVE-2026-92023)
Description
CVE-2026-92023 is a use-after-free vulnerability in the XML component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. The vulnerability is classified with high impact by the vendor.
Affected software
pkg:github/mozilla/gecko-dev/firefoxpkg:github/mozilla/gecko-dev/firefox-esrRun 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 a use-after-free condition in the XML component of Firefox, which could potentially lead to memory corruption or other security issues. Mozilla fixed this issue in Firefox 156 and the corresponding ESR releases 115.41, 140.16, and 153.3. The advisory classifies the impact as high, indicating a serious security concern. The fix is officially available in these versions.
Potential Impact
The vulnerability is rated as high impact by Mozilla, indicating that exploitation could lead to significant security consequences such as memory corruption. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Users should update to Firefox 156 or Firefox ESR 115.41, 140.16, or 153.3 to remediate this vulnerability. The vendor has provided official fixes in these versions. No additional mitigation steps are indicated beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-85j7-39hr-qwr2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92023"]
- State
- PUBLISHED
Threat ID: 6aaa081255bf5e2cf5ea4a6d
Added to database: 09/16/2026, 03:08:02 UTC
Last enriched: 09/16/2026, 05:07:39 UTC
Last updated: 09/16/2026, 05:07:39 UTC
Views: 4
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