CVE-2022-38667

Name: CVE-2022-38667
Creator: NVD / NIST
Published: 2022-08-22T20:15:08.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.13%

Last modified Jun 17, 2026

CVE-2022-38667 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used. The HTTP parser supports HTTP pipelining, but the asynchronous Connection layer is unaware of HTTP pipelining. EPSS estimates a 2.13% chance of exploitation in the next 30 days.

Description

HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used. The HTTP parser supports HTTP pipelining, but the asynchronous Connection layer is unaware of HTTP pipelining. Specifically, the Connection layer is unaware that it has begun processing a later request before it has finished processing an earlier request.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.13%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Crowcpp	Crow	<= 1.0\+4

References

https://cwe.mitre.org/data/definitions/372.htmlTechnical Description, Third Party Advisory
https://github.com/0xhebi/CVEs/blob/main/Crow/CVE-2022-38667.mdExploit, Third Party Advisory
https://github.com/CrowCpp/Crow/pull/524Patch, Third Party Advisory
https://gynvael.coldwind.pl/?id=753Exploit, Third Party Advisory
https://cwe.mitre.org/data/definitions/372.htmlTechnical Description, Third Party Advisory
https://github.com/0xhebi/CVEs/blob/main/Crow/CVE-2022-38667.mdExploit, Third Party Advisory
https://github.com/CrowCpp/Crow/pull/524Patch, Third Party Advisory
https://gynvael.coldwind.pl/?id=753Exploit, Third Party Advisory

Timeline

Published: Aug 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-38667?

How severe is CVE-2022-38667?

CVE-2022-38667 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.13% probability of exploitation in the next 30 days.

How do I fix CVE-2022-38667?

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-2022-38667?

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

Scan your code now

Source: NVD / NIST