Input validation error in hyper - CVE-2021-32715
Published: July 7, 2021 / Updated: August 19, 2026
Vulnerability identifier: #VU144329
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-32715
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in content-length header parsing when handling HTTP requests with a content-length header prefixed by a plus sign. A remote attacker can send a specially crafted request to cause a denial of service.
Affected software
hyper
How to mitigate CVE-2021-32715
Install security update from vendor's website.
hyper - update to 0.14.10