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CVE-2022-26134

Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability

  • Critical 9.8
  • Exploited: added to CISA KEV 2 Jun 2022
  • Used in ransomware campaigns

Description

In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.

Key facts

Published
3 Jun 2022
Last changed
21 Oct 2025
Assigned by
atlassian
KEV added
2 Jun 2022
KEV fix due
6 Jun 2022
Used in ransomware
Yes, according to CISA
EPSS
99.999% likely to be exploited in the next 30 days, higher than 99.994% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 9.8CVSS 3.1, Criticalfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What to do

  • Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
AtlassianConfluence Data Center
  • next of 1.3.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.4.17 (affected)
  • 7.13.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.13.7 (affected)
  • 7.14.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.14.3 (affected)
  • 7.15.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.15.2 (affected)
  • 7.16.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.16.4 (affected)
  • 7.17.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.17.4 (affected)
  • 7.18.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.18.1 (affected)
AtlassianConfluence Server
  • next of 1.3.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.4.17 (affected)
  • 7.13.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.13.7 (affected)
  • 7.14.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.14.3 (affected)
  • 7.15.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.15.2 (affected)
  • 7.16.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.16.4 (affected)
  • 7.17.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.17.4 (affected)
  • 7.18.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 7.18.1 (affected)

Timeline

  1. 2 Jun 2022 CVE-2022-26134 added to CISA KEV
  2. 2 Jun 2022 Added to the CISA KEV catalogue
  3. 3 Jun 2022 Published

Weakness

References