CVE-2026-67184

TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTTP Request

State
Published
Severity
8.7 High
Published
Jul 28, 2026
Updated
Jul 28, 2026
Reserved
Jul 28, 2026

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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.

Scores

CVSSScoreVectorSource
4.08.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NVulnCheck
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HVulnCheck

Weaknesses

Affected Products

ProductVersions
TinyWebGeneralSandman
  • e48f15d38d2bebeec9cabcfdde81931b10a1963b through a381da252fe8e873c8aff22703040426cc9b2ae0Affected
  • 0.0.8Affected

References

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