Skip to content

Get notified

Get an email when a new major security incident drops. No spam, unsubscribe any time.

Only used for pwn.watch incident emails. Protected by Cloudflare Turnstile.

ClosedPatched

Confluence Data Center/Server reset-and-takeover bug exploited for Cerber ransomware (CVE-2023-22518)

Atlassian Confluence Data Center and Server

An improper authorization bug let unauthenticated attackers reset Confluence Data Center and Server and create a new admin. Within days of disclosure it was exploited to deploy Cerber ransomware. Atlassian Cloud was not affected.

Why this severity: CVSS 10.0 (Atlassian, raised from 9.1), actively exploited (CISA KEV), known ransomware use

Started
Oct 31, 2023
Closed
Nov 7, 2023

Follow this incident

Affected

  • All versions of Confluence Data Center and Server before the fixed releases (NVD)

Fixed in

  • 7.19.16
  • 8.3.4
  • 8.4.4
  • 8.5.3
  • 8.6.1

Updates by day3

▸Nov 7, 2023

Link #
  1. CISA adds CVE-2023-22518 to the KEV catalog

▸Nov 6, 2023

Link #
  1. Atlassian raises the CVSS score to 10 after active exploitation and Cerber ransomware deployments

▸Oct 31, 2023

Link #
  1. Atlassian discloses CVE-2023-22518 and ships fixes

    Source

Advisories3

Get an email when a new major security incident drops. No spam, unsubscribe any time.