Vulnerability in Atlassian Confluence_data_center

CVE-2022-26138

The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password. A remote, unauthenticated attac…

EPSS: 0.982 (99.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . 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: .

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-26138?
CVE-2022-26138 is a critical-severity vulnerability in Atlassian Confluence_data_center, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2022-07-20.
How severe is CVE-2022-26138?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-26138 known to be exploited?
Yes. CVE-2022-26138 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-07-29), indicating it is being actively exploited. 31 public proof-of-concept repositories are indexed.