CVE-2026-117955
JIT miscompilation in the JavaScript: WebAssembly component
At a glance
- Severity
- Not available
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Deferred
Description
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
European references
- ENISA EUVD · EUVD-2026-110986
- GCVE · GCVE-0-2026-117955
CERT-FR advisories
- CERTFR-2026-AVI-1406 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | unaffected 153.6 ≤ 153.* ; unaffected 159 ≤ * |
| Mozilla · Thunderbird | unaffected 153.6 ≤ 153.* ; unaffected 159 ≤ * |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2043044
- https://www.mozilla.org/security/advisories/mfsa2026-118/
- https://www.mozilla.org/security/advisories/mfsa2026-120/
- https://www.mozilla.org/security/advisories/mfsa2026-121/
- https://www.mozilla.org/security/advisories/mfsa2026-122/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |