Uncontrolled Recursion in Crow - CVE-2026-116011
Published: September 8, 2026 / Updated: October 25, 2026
Vulnerability identifier: #VU147367
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-116011
CWE-ID: CWE-674
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 uncontrolled recursion in the crow::json::load() JSON parser when processing deeply nested JSON request bodies. A remote attacker can send a specially crafted request containing deeply nested JSON objects to cause a denial of service.
The issue can terminate the entire server process on Windows when the recursion exhausts available stack space.
Affected software
Crow
How to mitigate CVE-2026-116011
Install security update from vendor's website.
Crow - update to 1.3.4