Exploited CVEs / Atlassian / CVE-2023-22515
CVE-2023-22515
Actively exploited Atlassian Confluence Data Center and Server vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2023-10-05.
All about CVE-2023-22515: the Senserva AI read, the CISA required action and deadline, the official fix, and the questions admins ask.
Which of your devices are still exposed? Find out free with a full Microsoft 365 audit.
Atlassian Confluence Data Center and Server Broken Access Control Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2023-10-13 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Atlassian Security Advisories, linked below.
Risk summary
Senserva AI Opinion for CVE-2023-22515
Attackers exploit this Confluence Data Center and Server broken access control flaw to create their own Confluence administrator accounts, no credentials required. Rated Critical (CVSS 9.8) with 99% EPSS and confirmed ransomware use, it was abused as a zero-day before its October 2023 KEV listing. A rogue admin in your wiki can read everything, plant payloads in trusted pages, and pivot with the credibility of an internal tool.
Do this: Upgrade self-hosted Confluence and audit the administrator group for accounts created since early October 2023.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2023-22515
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2023-22515
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2023-10-13 (past due).
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
Official fix for CVE-2023-22515
The authoritative fix and affected-version list are published by the vendor. Find the Confluence Data Center and Server advisory on Atlassian Security Advisories.
Common questions about CVE-2023-22515
Is CVE-2023-22515 actively exploited?
Yes. CVE-2023-22515 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2023-10-05, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 99%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2023-22515?
CISA set the federal (BOD 22-01) remediation due date at 2023-10-13, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
What fixes CVE-2023-22515?
The authoritative fix is in the vendor advisory: see Atlassian Security Advisories for the patched Confluence Data Center and Server versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2023-22515?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-22515's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed three times a day (5 AM, 12:30 PM, and 7 PM US Central).
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Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
