CVE-2022-26134
CriticalExploitedPublic exploitIn 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.
Published Jun 3, 2022 · Updated Oct 21, 2025
Key Facts
Patch immediately- CVE-2022-26134 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Confluence Data Center (Atlassian), Confluence Server (Atlassian).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 6, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including Confluence Data Center 7.4.17, Confluence Data Center 7.13.7, Confluence Data Center 7.14.3.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-26134 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 2, 2022 | Jun 6, 2022 | Known |
| Industry KEV feed | Mar 6, 2022 | Jun 6, 2022 | Known |
| CIRCL KEV | Jun 2, 2022 | Jun 6, 2022 | Known |
| ENISA EUVD | Jun 2, 2022 | n/a | Not reported |
Required action: 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.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Confluence Data CenterAtlassian | 7.18.0, >= next of 1.3.0 | 7.4.17 |
| Confluence ServerAtlassian | 7.18.0, >= next of 1.3.0 | 7.4.17 |
Patched Releases
Confluence Data Center
7.4.17, 7.13.7, 7.14.3, 7.15.2, 7.16.4, 7.17.4, 7.18.1, unspecified
Confluence Server
7.4.17, 7.13.7, 7.14.3, 7.15.2, 7.16.4, 7.17.4, 7.18.1, unspecified
Timeline
Added to Industry KEV feed
Mar 6, 2022
Added to CISA KEV
Jun 2, 2022
Added to CIRCL KEV
Jun 2, 2022
Added to ENISA EUVD
Jun 2, 2022
Publicly disclosed
Jun 3, 2022
Last updated
Oct 21, 2025
Weakness Type
- CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
References
- advisoryhttp://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html
- advisoryhttp://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html
- advisoryVulnCheck exploitation report
- advisoryhttps://cybersafenv.org/2022/06/03/atlassian-releases-security-updates-for-confluence-server-and-data-center-cve-2022-26134/
- advisoryhttps://us-cert.cisa.gov/ncas/current-activity/2022/06/02/atlassian-releases-security-updates-confluence-server-and-data
FAQ
Common Questions.
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.
Affected: Confluence Data Center (Atlassian) versions 7.18.0, >= next of 1.3.0; Confluence Server (Atlassian) versions 7.18.0, >= next of 1.3.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 6, 2022 and is known to be used in ransomware campaigns.
Yes. It was added on Jun 2, 2022 with a federal remediation due date of Jun 6, 2022.
Public exploit code is available.
Fixed versions are available, including Confluence Data Center 7.4.17, Confluence Data Center 7.13.7, Confluence Data Center 7.14.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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