CVE-2026-74939highCWE-269

Privilege escalation in the DOM: Navigation component

41Vexday Risk Score

Sem sinal de exploração. Ela tem prova de conceito pública.

ssvc Attendcvss 8.8epss 0.3%

da publicação à arma6 dias

Publicada no NVD18 de ago.

1ª PoC+6d

probabilidade de exploração

0.3%top 77% das CVEs

exploração observada

nãonenhuma fonte reporta

1 exploit(s) público(s)

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

PoCs públicas encontradas — 1

githubgithub.com/SneakyNachos/CVE-2026-74939-escape-the-mac-n-cheese-box★ 1

⚠ Recursos públicos, para você avaliar a exposição de sistemas que controla ou está autorizado a testar. Teste apenas com autorização.

Referências

https://bugzilla.mozilla.org/show_bug.cgi?id=2054416 https://www.mozilla.org/security/advisories/mfsa2026-74/https://www.mozilla.org/security/advisories/mfsa2026-75/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/