NULL pointer dereference in Generalsandman Tinyweb
CVE-2026-67184
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.
EPSS: 0.004 (36.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Generalsandman Tinyweb — versions e48f15d38d2bebeec9cabcfdde81931b10a1963b, 0.0.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67184?
- CVE-2026-67184 is a high-severity vulnerability in Generalsandman Tinyweb, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-07-28.
- How severe is CVE-2026-67184?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-67184 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.