CVE-2022-26134

Atlassian Confluence Server and Data Center Remote Code Execution

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 100.0%

Published3 Jun 2022
Added to CISA KEV2 Jun 2022
Remediation due6 Jun 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Atlassian Confluence Data Center≥ 1.3 < 7.4.17 · ≥ 7.13.0 < 7.13.7 · ≥ 7.14.0 < 7.14.3 · ≥ 7.15.0 < 7.15.2

Atlassian Confluence Server≥ 1.3 < 7.4.17 · ≥ 7.13.0 < 7.13.7 · ≥ 7.14.0 < 7.14.3 · ≥ 7.15.0 < 7.15.2

Remediation

Fixed in

Atlassian Confluence Data Center≥ 7.4.17

Atlassian Confluence Server≥ 7.4.17

Patch & vendor advisories

References

http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.htmlThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.htmlThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.htmlExploitThird Party AdvisoryVDB Entry
https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.htmlVendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-79016Issue TrackingPatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26134US Government Resource

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2022-26134 being actively exploited?

Yes. CVE-2022-26134 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2 Jun 2022. It has been used in ransomware campaigns.

How severe is CVE-2022-26134?

CVE-2022-26134 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2022-26134?

Affected products include Atlassian Confluence Data Center, Atlassian Confluence Server.

How do I fix CVE-2022-26134?

Upgrade affected software to a fixed version, for example Atlassian Confluence Data Center 7.4.17, Atlassian Confluence Server 7.4.17 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-26134 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.