{"id":"CVE-2026-67184","summary":"TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTTP Request","details":"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.","modified":"2026-10-08T02:51:37.984008884Z","published":"2026-07-28T16:28:48.056Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67184.json","unresolved_ranges":[{"extracted_events":[{"introduced":"0.0.8"},{"last_affected":"0.0.8"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"VulnCheck","cwe_ids":["CWE-476"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67184.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67184"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/tinyweb-null-pointer-dereference-dos-via-malformed-http-request"},{"type":"PACKAGE","url":"https://github.com/GeneralSandman/TinyWeb"},{"type":"EVIDENCE","url":"https://github.com/theopaid/Unauthenticated-NULL-Pointer-Dereference-Crashes-the-Server-TinyWeb-"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/GeneralSandman/TinyWeb","events":[{"introduced":"e48f15d38d2bebeec9cabcfdde81931b10a1963b"},{"last_affected":"a381da252fe8e873c8aff22703040426cc9b2ae0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67184.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}