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CVE-2018-6651

28
FAUCET Score

CVE-2018-6651 describes a critical vulnerability in the uncurl library (versions prior to 0.07) and Parsec (versions prior to 140-3) where insufficient validation of the Origin header in WebSocket API requests allows remote attackers to bypass access restrictions. This flaw, rated 8.8 HIGH, enables full control over a victim's computer in Parsec due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.07CPE matchmatch criteria
cpe:2.3:a:uncurl_project:uncurl:*:*:*:*:*:*:*:*
< 140-3CPE matchmatch criteria
cpe:2.3:a:parsecgaming:parsec:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.12%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0212 is in the 79th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

gist.github.com / Zenexer/ac7601c0e367d876353137e5099b18a7
github.com / chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769
PatchThird Party Advisory
github.com / chrisd1100/uncurl/releases/tag/0.07
Third Party Advisory