{"id":"CVE-2018-6651","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-6651","generatedAt":"2026-10-29T00:37:22.183Z","title":"In the uncurl_ws_accept function in uncurl.c in uncurl before 0.07, as used in Parsec before 140-3, insufficient Origin header validation (accepting an arbitrary substring match) for WebSocket API requests allows remote attackers to bypass intended…","description":"In the uncurl_ws_accept function in uncurl.c in uncurl before 0.07, as used in Parsec before 140-3, insufficient Origin header validation (accepting an arbitrary substring match) for WebSocket API requests allows remote attackers to bypass intended access restrictions. In Parsec, this means full control over the victim's computer.","published":"2018-02-05T22:29:00.000Z","lastModified":"2026-06-17T02:02:09.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-352"],"affected":["uncurl project/uncurl","parsecgaming/parsec"],"epss":{"score":0.02386,"percentile":0.83847,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gist.github.com/Zenexer/ac7601c0e367d876353137e5099b18a7","source":"cve@mitre.org"},{"url":"https://github.com/chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/chrisd1100/uncurl/releases/tag/0.07","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://gist.github.com/Zenexer/ac7601c0e367d876353137e5099b18a7","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/chrisd1100/uncurl/releases/tag/0.07","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-6651","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}