CVE-2022-26133

Name: CVE-2022-26133
Creator: NVD / NIST
Published: 2022-04-20T19:15:08.157+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 71.39%

Last modified Jun 17, 2026

CVE-2022-26133 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. SharedSecretClusterAuthenticator in Atlassian Bitbucket Data Center versions 5.14.0 and later before 7.6.14, 7.7.0 and later prior to 7.17.6, 7.18.0 and later prior to 7.18.4, 7.19.0 and later prior to 7.19.4, and 7.20.0 allow a remote, unauthenticated attacker to execute arbitrary code via Java deserialization.. EPSS estimates a 71.39% chance of exploitation in the next 30 days.

Description

SharedSecretClusterAuthenticator in Atlassian Bitbucket Data Center versions 5.14.0 and later before 7.6.14, 7.7.0 and later prior to 7.17.6, 7.18.0 and later prior to 7.18.4, 7.19.0 and later prior to 7.19.4, and 7.20.0 allow a remote, unauthenticated attacker to execute arbitrary code via Java deserialization.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

71.39%

99.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Atlassian	Bitbucket Data Center	>= 5.14.0, < 7.6.14
Atlassian	Bitbucket Data Center	>= 7.7.0, < 7.17.6
Atlassian	Bitbucket Data Center	>= 7.18.0, < 7.18.4
Atlassian	Bitbucket Data Center	>= 7.19.0, < 7.19.4
Atlassian	Bitbucket Data Center	7.20.0

References

https://confluence.atlassian.com/security/multiple-products-security-advisory-hazelcast-vulnerable-to-remote-code-execution-cve-2016-10750-1116292387.htmlPatch, Vendor Advisory
https://jira.atlassian.com/browse/BSERV-13173Vendor Advisory
https://confluence.atlassian.com/security/multiple-products-security-advisory-hazelcast-vulnerable-to-remote-code-execution-cve-2016-10750-1116292387.htmlPatch, Vendor Advisory
https://jira.atlassian.com/browse/BSERV-13173Vendor Advisory

Timeline

Published: Apr 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-26133?

How severe is CVE-2022-26133?

CVE-2022-26133 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 71.39% probability of exploitation in the next 30 days.

How do I fix CVE-2022-26133?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-26133?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST