CVE-2018-6651 json
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 (…
published 2018-02-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18398
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- uncurl_project uncurl 0.07
- parsecgaming parsec 140-3
Exploit prediction
2.39% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769
patch, third-party-advisory
-
github.com
/chrisd1100/uncurl/releases/tag/0.07
third-party-advisory
- gist.github.com /Zenexer/ac7601c0e367d876353137e5099b18a7
Sources
- CVE List CVE-2018-6651
- NVD CVE-2018-6651
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.