{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21571 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21571 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21571 is a critical command injection vulnerability in Atlassian Bamboo Data Center, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21571 and fix it if it is affected.\n\nWhat it is: CVE-2026-21571 is a critical command injection vulnerability in Atlassian Bamboo Data Center, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-21571 in the wild and no public exploit code.\n\nAffected product: Atlassian Bamboo Data Center. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-21571/ (Markdown: https://insights.sbomify.com/CVE-2026-21571/index.md)","id":"CVE-2026-21571","markdown":"https://insights.sbomify.com/CVE-2026-21571/index.md","name":"CVE-2026-21571","record":{"aliases":["GHSA-6jpg-3x8j-cwmr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"CI/CD server","requires_auth":"low_privilege","summary":"Authenticated attackers can execute arbitrary commands on Atlassian Bamboo Data Center servers, leading to full system compromise.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"atlassian","cpe":[{"product":"bamboo","vendor":"atlassian"}],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"This Critical severity OS Command Injection vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0,\r\n11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center.\r\n \r\nThis RCE (Remote Code Execution) vulnerability, with a CVSS Score of 9.4 and a CVSS Vector of\r\nCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H allows an authenticated attacker to execute commands\r\non the remote system, which has high impact to confidentiality, high impact to integrity, high impact to availability,\r\nand requires no user interaction.\r\n \r\nAtlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade\r\nyour instance to one of the specified supported fixed versions:\r\n Bamboo Data Center 9.6.0: Upgrade to a release greater than or equal to 9.6.25\r\n Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.18 \r\n Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.6\r\n\r\nSee the release notes ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). You can download the latest version of Bamboo Data Center from the download center ([https://www.atlassian.com/software/bamboo/download-archives]).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Command injection in Bamboo Data Center","id":"CVE-2026-21571","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Code injection in Sourcetree for Mac","id":"CVE-2026-21575"},"packages":[],"prev":{"headline":"Code injection in Bamboo Data Center","id":"CVE-2026-21570"},"products":["Bamboo Data Center"],"published":"2026-04-21","related":[{"cvss_score":9.3,"headline":"Atlassian Multiple Products Files or Directories Accessible to External Parties","id":"CVE-2026-21589","kev_date_added":"2026-10-15","published":"2026-10-05"},{"cvss_score":9.8,"headline":"Auth bypass in Bamboo Data Center","id":"CVE-2022-26136","kev_date_added":null,"published":"2022-07-20"},{"cvss_score":9.8,"headline":"Deserialization in n/a","id":"CVE-2016-5229","kev_date_added":null,"published":"2016-08-02"},{"cvss_score":9.8,"headline":"Deserialization in n/a","id":"CVE-2014-9757","kev_date_added":null,"published":"2016-02-08"},{"cvss_score":9.8,"headline":"Deserialization in n/a","id":"CVE-2015-8360","kev_date_added":null,"published":"2016-02-08"},{"cvss_score":9.6,"headline":"Code injection in Bamboo","id":"CVE-2017-14589","kev_date_added":null,"published":"2017-12-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-23","vendors":["Atlassian"]},"summary":"Authenticated attackers can execute arbitrary commands on Atlassian Bamboo Data Center servers, leading to full system compromise.","url":"https://insights.sbomify.com/CVE-2026-21571/"}