{"cve":"CVE-2024-7765","nvd":{"published":"2025-03-20T10:15:36.867","modified":"2026-06-17T08:20:52.713","status":"Analyzed","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-409"],"references":["https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff","https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff"],"products":["h2o:h2o"],"source":"nvd","synced_at":"2026-10-19T22:00:17.429720821+00:00"},"epss":{"cve":"CVE-2024-7765","score":0.00779,"percentile":0.55905,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6w62-3jvj-mfj6","url":"https://osv.dev/vulnerability/GHSA-6w62-3jvj-mfj6","summary":"H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","modified":"2026-07-07T17:56:47.443201005Z","packages":[{"ecosystem":"PyPI","name":"h2o","purl":"pkg:pypi/h2o","ranges":[">=3.32.1.2 <=3.46.0.2"],"fixed":[]},{"ecosystem":"Maven","name":"ai.h2o:h2o-core","purl":"pkg:maven/ai.h2o/h2o-core","ranges":[">=3.32.1.2 <=3.46.0.2"],"fixed":[]}]},{"id":"PYSEC-2026-1439","url":"https://osv.dev/vulnerability/PYSEC-2026-1439","summary":"H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","modified":"2026-07-07T17:47:39.961712512Z","packages":[{"ecosystem":"PyPI","name":"h2o","purl":"pkg:pypi/h2o","ranges":[">=3.32.1.2 <=3.46.0.2"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}