CVE-2026-116011
Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 24, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 24, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-674 Uncontrolled Recursion
Affected Products
| Product | Versions |
|---|---|
CrowCrowCpp |
|
References
- GitHub Security Advisory (GHSA-7x84-xhp8-6cqj)vendor-advisory
- https://github.com/CrowCpp/Crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882bpatch
- Crow v1.3.4 Release Notesrelease-notes
- https://github.com/CrowCpp/Crow/blob/v1.3.3/include/crow/json.h#L878technical-description
- VulnCheck Advisory: Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()third-party-advisory
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