Memory Leak Vulnerability in TinyWeb Web Server by TinyWeb
CVE-2026-67183

8.7HIGH

Key Information:

Vendor

Generalsandman

Status
Tinyweb
Vendor
CVE Published:
28 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-67183?

TinyWeb, up to version 0.0.8, has a vulnerability that enables unauthenticated attackers to cause significant memory consumption by sending standard HTTP requests. Each request triggers the HttpParser::execute() function, which allocates various objects such as Url and HttpHeaders without appropriate memory management. This results in a continuous increase in memory use, leading to potential service disruption as the worker process eventually consumes all available memory and is terminated.

Affected Version(s)

TinyWeb e48f15d38d2bebeec9cabcfdde81931b10a1963b

TinyWeb e48f15d38d2bebeec9cabcfdde81931b10a1963b

TinyWeb 0.0.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-67183 - Proof of Concept

References

https://github.com/theopaid/Unauthenticated-Memory-Leak-L...
technical-descriptionexploit
https://www.vulncheck.com/advisories/tinyweb-memory-leak-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Theodosis Paidakis
.