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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-674"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116011.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.3.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "6956b7ca93c5df22f5aaccd670e5aa000c0d882b"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v1.3.4",
"range": [
{
"fixed": "54877af2d45bc4baeaabbf06b824e041a2faafb3"
}
],
"source": "REFERENCES_TAG"
}
]
}
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-116011.json"
[
{
"deprecated": false,
"digest": {
"line_hashes": [
"106235165500552742981564507882710865087",
"257356871027664299424711655007526478012",
"103491032729947620148360026250674695861",
"201530669038425920321609123497143320489",
"217242225783498483146456099853122272838",
"291401363098383295768199300217427595582",
"190089752248309007313015103040808448578",
"229974090790382730621145564384927107510"
],
"threshold": 0.9
},
"id": "CVE-2026-116011-0b352127",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/crowcpp/crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882b",
"target": {
"file": "include/crow/json.h"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "285328054012781063939655918243792079400",
"length": 5005
},
"id": "CVE-2026-116011-edcc6979",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/crowcpp/crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882b",
"target": {
"file": "include/crow/json.h",
"function": "load_nocopy_internal"
}
}
]
"2026-10-25T07:11:30Z"