Advisory severityCritical9.8Atlassian Exploited CISA KEV

Critical [CVE-2023-22518] Confluence Data Center: All versions of Confluence Data Center and Server are affected by this unexploited vulnerability.

This critical-severity Atlassian advisory covers CVE-2023-22518; related products: Confluence Data Center.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2023-22518 Source published Nov 1, 2023Source updated Jun 17, 2026

VulniPulse record published Nov 1, 2023Record updated Jun 17, 2026

CVE-2023-22518

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Summary

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account.

Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability.

Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

CISA Known Exploited Vulnerability

Listed:: Nov 7, 2023 · federal remediation due Nov 28, 2023
Required action:: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware use:: Known ransomware campaign use, according to CISA

KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.

Affected versions

all versions

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation

The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.