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TI-2022-09595 Aliases CVE-2022-26133GHSA-2p9p-h8q6-52g9

Deserialization of untrusted data in Atlassian Bitbucket Data Center

Priority CRITICAL 86CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.70591 99th percentileScored 2026-11-07
Fix Fixed Bitbucket Data Center (Atlassian): 7.6.14, 7.17.6, 7.18.4 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AtlassianBitbucket Data Center5.14.0 and later; before 7.6.14; 7.7.0 and later; before 7.17.6; 7.18.0 and later; before 7.18.4; 7.19.0 and later; before 7.19.4; 7.20.07.6.14, 7.17.6, 7.18.4, 7.19.4Patch availableCNA
  • Bitbucket Data Center VendorAtlassian Affected 5.14.0 and later; before 7.6.14; 7.7.0 and later; before 7.17.6; 7.18.0 and later; before 7.18.4; 7.19.0 and later; before 7.19.4; 7.20.0 Fixed in 7.6.14, 7.17.6, 7.18.4, 7.19.4 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:bitbucket_data_center:*:*:*:*:*:*:*:*5.14.0 to before 7.6.14; 7.7.0 to before 7.17.6; 7.18.0 to before 7.18.4; 7.19.0 to before 7.19.4VulnerableAtlassian
cpe:2.3:a:atlassian:bitbucket_data_center:7.20.0:*:*:*:*:*:*:*7.20.0VulnerableAtlassian
  • cpe:2.3:a:atlassian:bitbucket_data_center:*:*:*:*:*:*:*:* Versions 5.14.0 to before 7.6.14; 7.7.0 to before 7.17.6; 7.18.0 to before 7.18.4; 7.19.0 to before 7.19.4 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:bitbucket_data_center:7.20.0:*:*:*:*:*:*:* Versions 7.20.0 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Bitbucket Data Center (Atlassian) Fixed in 7.6.14, 7.17.6, 7.18.4, 7.19.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-26133
  2. 2026-10-03 Alias added: GHSA-2p9p-h8q6-52g9

References

Patch 1

Advisory 1

  • TI-2026-67904 Arbitrary file access in Atlassian Data Center products KEVCVSS 4.0CRITICAL 9.3
  • TI-2023-08755 Code injection in Atlassian Bitbucket Data Center CVSS 3.1HIGH 8.8
  • TI-2024-14400 Open redirect in Atlassian Bitbucket Data Center CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences