How severe is CVE-2023-22518?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2023-22518 known to be exploited?

Yes. CVE-2023-22518 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-11-07), indicating it is being actively exploited. 59 public proof-of-concept repositories are indexed.

Vulnerability in Atlassian Confluence Data Center

CVE-2023-22518

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 administrat…

EPSS: 0.944 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Atlassian Confluence Data Center — versions < 1.0.0, >= 1.0.0, >= 7.19.16
Atlassian Confluence Server — versions < 1.0.0, >= 1.0.0, >= 7.19.16

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-11-07. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-11-28.

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

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-22518?: CVE-2023-22518 is a critical-severity vulnerability in Atlassian Confluence Data Center. CVSS score: 10.0/10. Published 2023-10-31.
How severe is CVE-2023-22518?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2023-22518 known to be exploited?: Yes. CVE-2023-22518 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-11-07), indicating it is being actively exploited. 59 public proof-of-concept repositories are indexed.