TinyWeb through 0.0.8 contains a null pointer dereference vulnerability that allows unauthenticated remote attackers to crash worker processes by sending a malformed HTTP request line with an invalid version string. The HttpParser::execute() function fails to allocate the Url object when version parsing fails, leaving the url pointer NULL, and buildResponse() subsequently dereferences this NULL pointer without checking the valid_requ flag, producing a SIGSEGV that terminates the worker process and, when repeated across all workers, takes the server permanently offline until manually restarted.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-476"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67184.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "0.0.8"
},
{
"last_affected": "0.0.8"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"introduced": "e48f15d38d2bebeec9cabcfdde81931b10a1963b"
},
{
"last_affected": "a381da252fe8e873c8aff22703040426cc9b2ae0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}