CVE-2026-116011 Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116011?
CVE-2026-116011 is a high-severity vulnerability in CrowCpp Crow, published on 24 Oct 2026.
Official description
Crow before 1.3.4 contains an uncontrolled recursion vulnerability in crow::json::load() that allows remote unauthenticated attackers to crash the server by sending deeply nested JSON. Attackers can send a request body with thousands of nested objects to exhaust the worker thread stack, terminating the process and dropping all connections.
Weakness: CWE-674
Which versions are affected by CVE-2026-116011?
How do I fix CVE-2026-116011?
No fix has been published for CVE-2026-116011 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116011 being exploited?
There is no known exploitation of CVE-2026-116011 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-7x84-xhp8-6cqj, GHSA-88wj-6c62-8f7x.