CVE-2026-21589

Corroboration timeline

Each row is the first time that source reported this CVE, so the lag column shows how long each took relative to the earliest report. Corroboration across distinct sources is a confidence signal that a single advisory cannot give you.

1. nvd-cve2026-10-05 22:16 UTCfirst report

   CVE-2026-21589 — This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Ba

2. rapid7-blog2026-10-07 12:11 UTC+38h

   CVE-2026-21589: Critical unauthenticated arbitrary file access in Atlassian products

3. sans-isc2026-10-07 14:59 UTC+41h

   Scans for Atlassian vulnerablity (CVE-2026-21589), (Wed, Oct 7th)

4. cisa-kev2026-10-15 00:00 UTC+9d

   CVE-2026-21589 — Atlassian Multiple Products: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

How this page is built

ThreatFilter ingests 52 public threat-intelligence feeds. A page is published here only when at least 3 distinct sources report the same CVE — roughly 0.2% of the CVEs seen. Everything above is derived from those feeds; nothing is hand-written, and the timeline is the raw record of what each source published and when.

See the live advisory feed, the full source list, or the analyst tools.