Home › Exploited CVEs › CVE-2023-22518
CVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
Atlassian Confluence Data Center and Server · in CISA KEV since 2023-11-07
2023-11-07added to KEV
2023-11-28federal remediation due date
100.00%EPSS exploit probability (30 days) 100.0th percentile
9.8 CRITICALCVSS 3.1
Knownknown ransomware use
7days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-863 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2023-10-31 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-22518.json · all KEV CVEs
Kevscope: daily CISA KEV + EPSS datasetThe whole KEV catalog joined with daily EPSS and CVSS scores as CSV/Parquet, refreshed daily. Free to download.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.