{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21634 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21634 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21634 is a medium-severity denial of service vulnerability in Ubiquiti Inc UniFi Protect Application, published on 5 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21634 and fix it if it is affected.\n\nWhat it is: CVE-2026-21634 is a medium-severity denial of service vulnerability in Ubiquiti Inc UniFi Protect Application, published on 5 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-21634 in the wild and no public exploit code.\n\nAffected product: Ubiquiti Inc UniFi Protect Application. 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-2026-21634/ (Markdown: https://insights.sbomify.com/CVE-2026-21634/index.md)","id":"CVE-2026-21634","markdown":"https://insights.sbomify.com/CVE-2026-21634/index.md","name":"CVE-2026-21634","record":{"aliases":["GHSA-w6v6-cxgj-7xh5"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"UniFi Protect Application","requires_auth":"none","summary":"An attacker on the adjacent network can cause a denial of service by overflowing the discovery protocol in the UniFi Protect Application.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"unifi_protect","vendor":"ui"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A malicious actor with access to the adjacent network could overflow the UniFi Protect Application (Version 6.1.79 and earlier) discovery protocol causing it to restart.\r\n\r\n\r\nAffected Products:\r\nUniFi Protect Application (Version 6.1.79 and earlier). \r\n \r\nMitigation:\r\nUpdate your UniFi Protect Application to Version 6.2.72 or later.","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":"Denial of service in UniFi Protect Application","id":"CVE-2026-21634","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in UniFi Connect EV Station Lite","id":"CVE-2026-21635"},"packages":[],"prev":{"headline":"Auth bypass in UniFi Protect Application","id":"CVE-2026-21633"},"products":["UniFi Protect Application"],"published":"2026-01-05","related":[{"cvss_score":9.9,"headline":"Server-side request forgery in UniFi Protect Application","id":"CVE-2026-55115","kev_date_added":null,"published":"2026-07-02"},{"cvss_score":9.6,"headline":"A vulnerability found in UniFi Protect application V1.18.1 and earlier permits a malicious actor who has already gained access to a network","id":"CVE-2021-22943","kev_date_added":null,"published":"2021-08-31"},{"cvss_score":8.8,"headline":"SQL injection in UniFi Protect Application","id":"CVE-2026-56841","kev_date_added":null,"published":"2026-07-02"},{"cvss_score":8.8,"headline":"Auth bypass in UniFi Protect Application","id":"CVE-2026-21633","kev_date_added":null,"published":"2026-01-05"},{"cvss_score":8.8,"headline":"Cross-site request forgery in UniFi Protect application","id":"CVE-2021-22957","kev_date_added":null,"published":"2021-11-24"},{"cvss_score":8.6,"headline":"Auth bypass in UniFi Protect Application","id":"CVE-2026-54407","kev_date_added":null,"published":"2026-07-02"},{"cvss_score":8.6,"headline":"Auth bypass in UniFi Protect Application","id":"CVE-2026-54408","kev_date_added":null,"published":"2026-07-02"}],"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":"2026-01-05","vendors":["Ubiquiti Inc"]},"summary":"An attacker on the adjacent network can cause a denial of service by overflowing the discovery protocol in the UniFi Protect Application.","url":"https://insights.sbomify.com/CVE-2026-21634/"}