Vulnerability · Published Jul 28, 2026 · Assigned by VulnCheck

CVE-2026-67183TinyWeb 0.0.8 Memory Leak DoS via HTTP Request Handling

High 7.5

In plain English

A high-severity memory leak in TinyWeb from GeneralSandman. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 56.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

TinyWeb through 0.0.8 contains a memory leak vulnerability that allows unauthenticated attackers to exhaust available memory by sending ordinary well-formed HTTP requests. Each request causes HttpParser::execute() to allocate Url objects, HttpHeaders objects, and HttpHeader instances via raw new expressions that are never freed due to missing destructors and unreachable delete calls, causing worker resident memory to grow monotonically by approximately 20 to 28 kB per request until the worker process is killed.

Affected products (as reported)

Vendor	Product	Versions
GeneralSandman	TinyWeb	e48f15d38d2bebeec9cabcfdde81931b10a1963b – through a381da252fe8e873c8aff22703040426cc9b2ae00.0.8

Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Researcher Disclosure technical-description, exploit
https://www.vulncheck.com/advisories/tinyweb-memory-leak-dos-via-http-request-handling third-party-advisory