CVE-2022-38667

Exp

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.

Published: 2022-08-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-38667 is rated High Exploit Risk (79/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.99%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-38667

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-38667

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-13 3.11% 0.99% -2.12%
2 2026-04-14 3.32% 3.11% -0.21%
3 2026-03-08 — 3.32% —

Full EPSS history (57 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-38667

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2022-38667

Affected software / configurations for CVE-2022-38667

Vendor Product Version Raw CPE
crowcpp crow <= 1.0\+4 cpe:2.3:a:crowcpp:crow:*:*:*:*:*:*:*:*

References for CVE-2022-38667

URL Tags
https://cwe.mitre.org/data/definitions/372.html Technical Description Third Party Advisory
https://github.com/0xhebi/CVEs/blob/main/Crow/CVE-2022-38667.md Exploit Third Party Advisory
https://github.com/CrowCpp/Crow/pull/524 Patch Third Party Advisory
https://gynvael.coldwind.pl/?id=753 Exploit Third Party Advisory
cvelogic Threat Intelligence