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Vulnerabilities CVE-2026-67184

CVE-2026-67184

High
Open
TLP:CLEAR

TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTTP Request

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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.

Details

CVSS Score
8.7
EPSS Score
0.43%

36th percentile

CVSS Vector
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
Confidence
90%
Published
Jul 28, 2026
Last Modified
Jul 28, 2026
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