by Kastro
Paper/Archive/CVE-2026-92059

CVE-2026-92059

Mozilla Firefox — Incorrect boundary conditions in the DOM: Editor component

EPSS 0.1%CVSS 9.3
critical.is priorityof 100
28
CVSS 9.3 (ADP)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 1.4.014 × 200.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Incorrect boundary conditions in the DOM: Editor component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory153.3CNA
Thunderbirdsee advisory153.3CNA

Scores by source

CISA ADP9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=2068442refmozilla.org/security/advisories/mfsa2026-90refmozilla.org/security/advisories/mfsa2026-93refmozilla.org/security/advisories/mfsa2026-94refmozilla.org/security/advisories/mfsa2026-96