Risk Letters

Exploited vulnerability

CVE-2023-22518

TLP:CLEAR

Atlassian Confluence Data Center and Server Improper Authorization Vulnerability

Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

Facts

  • Vendor: Atlassian
  • Product: Confluence Data Center and Server
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 100 %
  • On CISA's Known Exploited Vulnerabilities list since: 7 November 2023
  • First known exploitation: 7 November 2023
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 28 November 2023
  • Weakness: CWE-863
  • First seen by Risk Letters: 7 November 2023

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