{"id":"CVE-2024-10549","aliases":["GHSA-wwr9-4gmr-xvq9","PYSEC-2026-1445"],"url":"https://o3.security/vulnerability/CVE-2024-10549","summary":"Denial of Service by ReDOS in h2oai/h2o-3","details":"A vulnerability in the `/3/Parse` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an attacker can exhaust all available threads, leading to a complete denial of service.","published":"2025-03-20T10:11:32.621Z","modified":"2026-08-12T03:51:14.514554083Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00613,"percentile":0.46574,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"ai.h2o:h2o-core","fixedVersion":null},{"ecosystem":"PyPI","name":"h2o","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://huntr.com/bounties/ce7bd2d6-fd38-440d-a91a-dd8f3fc06bc2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/10xxx/CVE-2024-10549.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-10549"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.514554083Z"}}