{"cve":"CVE-2024-5986","nvd":{"published":"2026-02-02T11:16:16.737","modified":"2026-06-17T08:17:02.637","status":"Deferred","description":"A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","score":9.1},"cwes":["CWE-73"],"references":["https://huntr.com/bounties/64ff5319-6ac3-4447-87f7-b53495d4d5a3"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:22:27.261130201+00:00"},"epss":{"cve":"CVE-2024-5986","score":0.00704,"percentile":0.53332,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wj3h-wx8g-x699","url":"https://osv.dev/vulnerability/GHSA-wj3h-wx8g-x699","summary":"H2O has an External Control of File Name or Path vulnerability","modified":"2026-10-27T16:45:03.593504579Z","packages":[{"ecosystem":"Maven","name":"ai.h2o:h2o-core","purl":"pkg:maven/ai.h2o/h2o-core","ranges":["<=3.46.0.1"],"fixed":[]},{"ecosystem":"PyPI","name":"h2o","purl":"pkg:pypi/h2o","ranges":["<=3.46.0.1"],"fixed":[]}]},{"id":"PYSEC-2026-353","url":"https://osv.dev/vulnerability/PYSEC-2026-353","summary":"H2O has an External Control of File Name or Path vulnerability","modified":"2026-07-01T20:22:54.140956Z","packages":[{"ecosystem":"PyPI","name":"h2o","purl":"pkg:pypi/h2o","ranges":["<=3.46.0.1"],"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."]}