CRITICAL

CVE-2022-38667

CVSS v3

9.8

CRITICAL

EPSS Score

3.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2022-38667 yet.

Full record on NVD

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.

Technical details

Published: 2022-08-22

Frequently asked questions

What is CVE-2022-38667?

Is CVE-2022-38667 actively exploited?

Active exploitation of CVE-2022-38667 has not been confirmed. Its EPSS score was 3.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-38667?

CVE-2022-38667 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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