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Known exploited vulnerability

CVE-2023-22518

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 100%Published · Atlassian

The short answer

CVE-2023-22518 affects Atlassian Confluence Data Center and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-11-07: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-863.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Nov 7, 2023

Federal due date Nov 28, 2023

EPSS, next 30 days

100%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected products

Confluence Data Center, Confluence Server. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2023-22518 being exploited?

Yes. CISA added CVE-2023-22518 to its Known Exploited Vulnerabilities catalog on 2023-11-07, with a federal remediation due date of 2023-11-28. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2023-22518?

CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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