Atlassian Bitbucket Server and Data Center Command Injection Vulnerability
Multiple API endpoints in Atlassian Bitbucket Server and Data Center 7.0.0 before version 7.6.17, from version 7.7.0 before version 7.17.10, from version 7.18.0 before version 7.21.4, from version 8.0.0 before version 8.0.3, from version…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)30 Sept 2022
- Exploited in EUVD (ENISA)30 Sept 2022
- Used by ransomwareno
- EPSS above 10 %99.1%
- No account, over the networkno
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
Multiple API endpoints in Atlassian Bitbucket Server and Data Center 7.0.0 before version 7.6.17, from version 7.7.0 before version 7.17.10, from version 7.18.0 before version 7.21.4, from version 8.0.0 before version 8.0.3, from version 8.1.0 before version 8.1.3, and from version 8.2.0 before version 8.2.2, and from version 8.3.0 before 8.3.1 allows remote attackers with read permissions to a public or private Bitbucket repository to execute arbitrary code by sending a malicious HTTP request. This vulnerability was reported via our Bug Bounty Program by TheGrandPew.
Affected products
- unspecified <8.1.3
- 7.0.0 <unspecified
- 7.18.0 <unspecified
- unspecified <8.3.1
- 8.1.0 <unspecified
- unspecified <7.21.4
- 8.2.0 <unspecified
- unspecified <8.2.2
- 8.0.0 <unspecified
- 7.7.0 <unspecified
- unspecified <7.6.17
- unspecified <7.17.10
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 99.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-21589Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability9.1 · Rising fast
- CVE-2021-26086Atlassian Jira Server and Data Center Path Traversal Vulnerability7.5 · Background exploitation
- CVE-2023-22527Atlassian Confluence Data Center and Server Template Injection Vulnerability10.0 · Background exploitation
- CVE-2023-22518Atlassian Confluence Data Center and Server Improper Authorization Vulnerability10.0 · Background exploitation
- CVE-2023-22515Atlassian Confluence Data Center and Server Broken Access Control Vulnerability10.0 · Background exploitation
- CVE-2022-26138Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability9.3 · Background exploitation