What’s Vulnerable › Vulnerabilities

CVE-2022-26133

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 70.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-20 · updated 2026-06-17
• Weakness: CWE-502

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.

Affected products

• Atlassian Bitbucket Data Center: from 5.14.0 before 7.6.14; from 7.7.0 before 7.17.6; from 7.18.0 before 7.18.4; from 7.19.0 before 7.19.4; 7.20.0 — fixed in 7.17.6, 7.18.4, 7.19.4, 7.6.14

How to fix

Upgrade to a fixed version: Atlassian Bitbucket Data Center 7.17.6, 7.18.4, 7.19.4, 7.6.14. Check the vendor advisory for mitigations.

References

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

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