{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21569 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21569 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21569 is a high-severity vulnerability in Atlassian Crowd Data Center, published on 28 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21569 and fix it if it is affected.\n\nWhat it is: CVE-2026-21569 is a high-severity vulnerability in Atlassian Crowd Data Center, published on 28 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-21569 in the wild and no public exploit code.\n\nAffected product: Atlassian Crowd 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-2026-21569/ (Markdown: https://insights.sbomify.com/CVE-2026-21569/index.md)","id":"CVE-2026-21569","markdown":"https://insights.sbomify.com/CVE-2026-21569/index.md","name":"CVE-2026-21569","record":{"aliases":["GHSA-5x73-r429-p343"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Atlassian Crowd","requires_auth":"high_privilege","summary":"Authenticated attackers can exploit XXE in Atlassian Crowd to access local/remote content and cause denial of service.","user_interaction":"not_required","vuln_class":"xxe"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"atlassian","cpe":[{"product":"crowd","vendor":"atlassian"}],"cvss":{"score":7.9,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H","version":"3.0"},"cwes":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"description":"This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. \n\t\n\tThis XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction. \n\t\n\tAtlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\n\t\t\n\t\t* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3\n\t\t\n\t\t\n\t\n\tSee the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive). \n\t\n\tThis vulnerability was reported via our Atlassian (Internal) program.","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":"XML external entity in Crowd Data Center","id":"CVE-2026-21569","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xxe","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Code injection in Bamboo Data Center","id":"CVE-2026-21570"},"packages":[],"prev":{"headline":"Denial of service in UDX710","id":"CVE-2026-21555"},"products":["Crowd Data Center"],"published":"2026-01-28","related":[{"cvss_score":9.8,"headline":"Atlassian Crowd and Crowd Data Center Remote Code Execution","id":"CVE-2019-11580","kev_date_added":"2021-11-03","published":"2019-06-03"},{"cvss_score":9.8,"headline":"Auth bypass in Crowd Data Center","id":"CVE-2022-43782","kev_date_added":null,"published":"2022-11-17"},{"cvss_score":9.8,"headline":"Deserialization in n/a","id":"CVE-2016-6496","kev_date_added":null,"published":"2016-12-09"},{"cvss_score":8.1,"headline":"Auth bypass in Crowd","id":"CVE-2017-18105","kev_date_added":null,"published":"2019-03-29"},{"cvss_score":8.1,"headline":"Auth bypass in Crowd","id":"CVE-2018-20238","kev_date_added":null,"published":"2019-02-13"},{"cvss_score":8,"headline":"Code injection in Crowd Data Center","id":"CVE-2023-22521","kev_date_added":null,"published":"2023-11-21"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-01-28","vendors":["Atlassian"]},"summary":"Authenticated attackers can exploit XXE in Atlassian Crowd to access local/remote content and cause denial of service.","url":"https://insights.sbomify.com/CVE-2026-21569/"}