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Known exploited vulnerability

CVE-2022-26134

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 100%Published · Atlassian

The short answer

CVE-2022-26134 affects Atlassian Confluence Data Center and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-06-02: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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.

Weakness: CWE-917.

Severity

9.8 critical

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

Exploited (CISA KEV)

Yes, since Jun 2, 2022

Federal due date Jun 6, 2022

EPSS, next 30 days

100%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says 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.

Affected products

Confluence Data Center, Confluence Server. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2022-26134 being exploited?

Yes. CISA added CVE-2022-26134 to its Known Exploited Vulnerabilities catalog on 2022-06-02, with a federal remediation due date of 2022-06-06. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2022-26134?

CISA's 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.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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