{"items":[{"id":"NVI-00002488","kind":"vulnerability","title":"Improper rate limiting in Koel","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-r37h-j483-cjjm","CVE-2021-33563"],"plain_summary":"OSV carries this publisher advisory for phanan/koel. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 5.1.4 for phanan/koel. Confirm the publisher’s latest guidance.","source_ids":["sr-1ad497dc2bae986cf3f3d816695afc93"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2021-33563","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1ad497dc2bae986cf3f3d816695afc93"],"technology":"phanan/koel","known_exclusions":[],"conditions_summary":"Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows whether a failed login attempt had a valid username. 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