CVE-2026-116011
Crow before 1.3.4 contains an uncontrolled recursion vulnerability in crow::json::load() that…
- Risk score
- 50/100
- CVSS
- 7.5 v3.1
- Published
- 24 Oct 2026
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What to know
- What it is
- 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 dro…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.3.4 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
- Remotely exploitable without logging in
References
- https://github.com/CrowCpp/Crow/blob/v1.3.3/include/crow/json.h#L878
- https://github.com/CrowCpp/Crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882b
- https://github.com/CrowCpp/Crow/releases/tag/v1.3.4
- https://github.com/CrowCpp/Crow/security/advisories/GHSA-7x84-xhp8-6cqj
- https://www.vulncheck.com/advisories/crow-before-1.3.4-denial-of-service-via-deeply-nested-json-in-crow-json-load
Original 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.
Last activity 24 Oct 2026. Patch Forecast updates every hour.