CVE-2018-6651

Name: CVE-2018-6651
Creator: NVD / NIST
Published: 2018-02-05T22:29:00.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.16%

Last modified Jun 17, 2026

CVE-2018-6651 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.16% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.16%

79.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Uncurl Project	Uncurl	< 0.07
Parsecgaming	Parsec	< 140-3

References

https://gist.github.com/Zenexer/ac7601c0e367d876353137e5099b18a7
https://github.com/chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769Patch, Third Party Advisory
https://github.com/chrisd1100/uncurl/releases/tag/0.07Third Party Advisory
https://gist.github.com/Zenexer/ac7601c0e367d876353137e5099b18a7
https://github.com/chrisd1100/uncurl/commit/448cd13e7b18c83855d706c564341ddd1e38e769Patch, Third Party Advisory
https://github.com/chrisd1100/uncurl/releases/tag/0.07Third Party Advisory

Timeline

Published: Feb 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6651?

How severe is CVE-2018-6651?

Severity scoring for CVE-2018-6651 is pending analysis. The EPSS model estimates a 2.16% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6651?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6651?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST