boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-100823

CVE-2026-100823MEDIUM
Mozilla Firefox — Spoofing issue in the Downloads component in Firefox for Android
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  L  N  L    5.4   .0015    3.6     —
AFFECTED
  Product  Versions     Fixed
  Firefox  unspecified  157
TIMELINE
  Sep 26  Reserved by mozilla
  Sep 29  Published (CNA: mozilla)
  Oct 5   EXPLOIT PUBLISHED — CVE-2026-100823 (Mozilla Firefox). Public exploit reference added.
CWE-451 · CNA: mozilla · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 157.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
September 26, 2026ReservedReserved by mozilla
September 29, 2026PublishedPublished (CNA: mozilla)
October 5, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-100823 (Mozilla Firefox). Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
MozillaFirefox——157

Weaknesses

CWE-451

References (2)

Related

Authoritative record: CVE-2026-100823 at cve.org

Vendors: mozilla

Weaknesses: CWE-451

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100823 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 Wednesday, October 7, 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.