CVE-2022-38667
HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.13% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- crowcpp/crow
- Source
- cve@mitre.org
EPSS 3.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.