boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-84127

CVE-2026-84127MEDIUM
Mozilla Firefox — Information disclosure in the WebExtensions component in Firefox for Android
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  L  N  N    4.3   .0026   16.0     —
AFFECTED
  Product  Versions     Fixed
  Firefox  unspecified  155
TIMELINE
  Sep 1   Reserved by mozilla
  Sep 1   Published (CNA: mozilla)
  Sep 3   EXPLOIT PUBLISHED — CVE-2026-84127 (Mozilla Firefox). Public exploit reference added.
CWE-200 · CNA: mozilla · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

Information disclosure in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 155.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
September 1, 2026ReservedReserved by mozilla
September 1, 2026PublishedPublished (CNA: mozilla)
September 3, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-84127 (Mozilla Firefox). Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
MozillaFirefox——155

Weaknesses

CWE-200

References (2)

Related

Authoritative record: CVE-2026-84127 at cve.org

Vendors: mozilla

Weaknesses: CWE-200

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-84127 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.