Risk Letters

Exploited vulnerability

CVE-2023-22515

TLP:CLEAR

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

Facts

  • Vendor: Atlassian
  • Product: Confluence Data Center and Server
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 99.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 5 October 2023
  • First known exploitation: 5 October 2023
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 13 October 2023
  • First seen by Risk Letters: 5 October 2023

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD