CVE-2026-67183 | TinyWeb through 0.0.8 contains a memory leak vulnerability t… | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-67183
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-28 16:06 UTC
Published: 2026-07-28 16:26 UTC
Last updated: 2026-07-28 17:22 UTC
Primary CWE: CWE-401
Missing Release of Memory after Effective Lifetime
Vendor / Product: GeneralSandman / TinyWeb
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
GeneralSandman	TinyWeb	—	e48f15d38d2bebeec9cabcfdde81931b10a1963b ≤ a381da252fe8e873c8aff22703040426cc9b2ae0, 0.0.8

Weakness (CWE)

CWE	Source	Description
CWE-401	cna	Missing Release of Memory after Effective Lifetime

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.7	HIGH	4.0	cna	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
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)