Site isolation issue in the WebExtensions component (Mozilla Firefox)
En bref
- Source
- NVD
- EPSS
- EPSS 0.22 % · centile 13 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- mozilla
- Statut NVD
- Analyzed
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Description
Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Faiblesses (CWE)
Références
- https://bugzilla.mozilla.org/show_bug.cgi?id=2049148
- https://www.mozilla.org/security/advisories/mfsa2026-74/
- https://www.mozilla.org/security/advisories/mfsa2026-76/
- https://www.mozilla.org/security/advisories/mfsa2026-77/
- https://www.mozilla.org/security/advisories/mfsa2026-78/
- https://www.mozilla.org/security/advisories/mfsa2026-79/
- https://www.mozilla.org/security/advisories/mfsa2026-80/
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N | CISA-ADP |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-60659
- GCVE · GCVE-0-2026-74960
Avis du CERT-FR
- CERTFR-2026-AVI-1054 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*< 140.14.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 141.0 < 153.1.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*< 140.14.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*≥ 141.0 < 153.1.0
Produits affectés
| Produit | Versions |
|---|---|
| Mozilla · Firefox | unaffected 140.14 ≤ 140.* ; unaffected 153.1 ≤ 153.* ; unaffected 154 ≤ * |
| Mozilla · Thunderbird | unaffected 140.14 ≤ 140.* ; unaffected 153.1 ≤ 153.* ; unaffected 154 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| 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 |