CVE-2026-92022 — Firefox — Fixed in 156 (+ other fixes)
Use-after-free in the DOM: HTML Parser component. This vulnerability was 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.
Fixed versions
Choose the version for your installed product and release branch.
| Product | Fixed versions |
|---|---|
| Firefox | 156 |
| Firefox ESR | 115.41 / 140.16 / 153.3 |
| Thunderbird | 156 / 140.16 / 153.3 |
CVSS score8.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness type (CWE)CWE-416
Vendorsmozilla
Affected products
| Vendors | Product | Versions |
|---|---|---|
| mozilla | firefox | < 115.41.0 |
| mozilla | thunderbird | < 140.16.0 |
Related articles
This product uses the NVD API but is not endorsed or certified by the NVD.