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TI-2020-18553 Aliases CVE-2020-36233GHSA-9x2m-28m5-328q

Incorrect default permissions in Atlassian Bitbucket Server

Priority LOW 34CWE-276Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

The Microsoft Windows Installer for Atlassian Bitbucket Server and Data Center before version 6.10.9, 7.x before 7.6.4, and from version 7.7.0 before 7.10.1 allows local attackers to escalate privileges because of weak permissions on the installation directory.

Why it matters now

EPSS 0.00265 18th percentileScored 2026-11-07
Fix Fixed Bitbucket Server (Atlassian): 6.10.9, 7.6.4, 7.10.1Bitbucket Data Center (Atlassian): 6.10.9, 7.6.4, 7.10.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AtlassianBitbucket Serverbefore 6.10.9; 7.0.0 and later; before 7.6.4; 7.7.0 and later; before 7.10.16.10.9, 7.6.4, 7.10.1Patch availableCNA
AtlassianBitbucket Data Centerbefore 6.10.9; 7.0.0 and later; before 7.6.4; 7.7.0 and later; before 7.10.16.10.9, 7.6.4, 7.10.1Patch availableCNA
  • Bitbucket Server VendorAtlassian Affected before 6.10.9; 7.0.0 and later; before 7.6.4; 7.7.0 and later; before 7.10.1 Fixed in 6.10.9, 7.6.4, 7.10.1 Patch available CNA
  • Bitbucket Data Center VendorAtlassian Affected before 6.10.9; 7.0.0 and later; before 7.6.4; 7.7.0 and later; before 7.10.1 Fixed in 6.10.9, 7.6.4, 7.10.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:bitbucket:*:*:*:*:*:*:*:*before 6.10.9; 7.0.0 to before 7.6.4; 7.7.0 to before 7.10.1VulnerableAtlassian
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:atlassian:bitbucket:*:*:*:*:*:*:*:* Versions before 6.10.9; 7.0.0 to before 7.6.4; 7.7.0 to before 7.10.1 Vulnerable ·Atlassian
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

  • Fix · CNA Bitbucket Server (Atlassian) Fixed in 6.10.9, 7.6.4, 7.10.1
  • Fix · CNA Bitbucket Data Center (Atlassian) Fixed in 6.10.9, 7.6.4, 7.10.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36233
  2. 2026-10-03 Alias added: GHSA-9x2m-28m5-328q

References

Advisory 2

  • TI-2022-17043 OS command injection in Atlassian Bitbucket Server KEVCVSS 3.1HIGH 8.8
  • TI-2022-21515 Command injection in Atlassian Bitbucket Data Center CVSS 3.1CRITICAL 9.8
  • TI-2022-09598 Improper authentication in Atlassian Bamboo Server CVSS 3.1CRITICAL 9.8
  • TI-2019-11186 OS command injection in Atlassian Bitbucket Server CVSS 3.1CRITICAL 9.8
  • TI-2018-03782 Link following in Atlassian Bitbucket Server CVSS 3.0CRITICAL 9.9
  • TI-2019-02555 Path traversal in Atlassian Bitbucket Data Center CVSS 3.0CRITICAL 9.1
See all 19 →

Sources

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