CVE-2026-67184 TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTTP Request
Unauthenticated attackers can crash TinyWeb server workers by sending malformed HTTP requests, causing a permanent denial of service until manual restart.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67184?
CVE-2026-67184 is a high-severity vulnerability in GeneralSandman TinyWeb, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-67184?
How do I fix CVE-2026-67184?
No fix has been published for CVE-2026-67184 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-67184 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67184 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-r4g2-gw8j-xgxv.