{"id":"CVE-2025-1867","aliases":["EUVD-2025-5808","GHSA-4qqr-wvpj-rjf9","OESA-2025-2731"],"status":"published","title":"HTTP Response Smuggling Vulnerability in libhv","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","severity":{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00385,"percentile":0.32866,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-444"],"published":"2025-03-03T08:48:56Z","modified":"2026-10-28T02:30:45Z","fixes":[{"ecosystem":"openEuler:24.03-LTS","package":"libhv","fixed_in":["1.3.2-2.oe2403"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"openEuler:24.03-LTS","package":"libhv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-2.oe2403"}]}]}],"products":[{"vendor":"ithewei","product":"libhv"}],"references":[{"url":"https://github.com/ithewei/libhv/pull/689","tags":["patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-1867","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4qqr-wvpj-rjf9"},{"url":"https://github.com","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1867.json","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2731","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-1867","title":"HTTP Response Smuggling Vulnerability in libhv","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","status":"published","published":"2025-03-03T08:48:56.284Z","modified":"2025-03-03T16:32:50.538Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:32:49.824855Z"}],"euvd":[{"id":"EUVD-2025-5808","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","status":"published","published":"2025-03-03T08:48:56Z","modified":"2025-03-03T16:32:50Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"}],"updated_at":"2026-11-02T20:53:18.061162Z"}],"ghsa":[{"id":"GHSA-4qqr-wvpj-rjf9","title":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in...","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","status":"published","published":"2025-03-03T09:30:35Z","modified":"2025-03-03T09:30:41Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T15:00:06.693368Z"}],"nvd":[{"id":"CVE-2025-1867","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","status":"published","published":"2025-03-03T09:15:39.52Z","modified":"2026-06-17T08:39:56.033Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:10:52.398004Z"}],"osv":[{"id":"CVE-2025-1867","title":"HTTP Response Smuggling Vulnerability in libhv","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.","status":"published","published":"2025-03-03T08:48:56.284Z","modified":"2026-10-28T02:30:45.195572197Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T15:44:46.665428Z"},{"id":"OESA-2025-2731","title":"libhv security update","description":"Like libevent, libev, and libuv, libhv provides event-loop with non-blocking IO and timer, but simpler api and richer protocols\r\n\r\nSecurity Fix(es):\n\nInconsistent Interpretation of HTTP Requests (\u0026apos;HTTP Request/Response Smuggling\u0026apos;) vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.(CVE-2025-1867)","status":"published","published":"2025-11-22T11:09:51Z","modified":"2026-08-18T01:19:20.249892958Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:44.957082Z"}]}}