CVE-2025-3268: tinywebserver Auth Bypass (CVSS 5.3)

Description

A vulnerability has been found in qinguoyi TinyWebServer up to 1.0 and classified as critical. This vulnerability affects unknown code of the file http/http_conn.cpp. The manipulation of the argument m_url_real leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Is your site exposed to CVE-2025-3268?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-287 Improper Authentication

Affected Products

Vendor	Product	Versions
qinguoyi	tinywebserver	< 1.0

References

Other References

https://magnificent-dill-351.notion.site/Improper-Authentication-in-TinyWebServer-1-0-1c9c693918ed80cfa0f5db1a1d03c5e7 https://vuldb.com/?ctiid.303340 https://vuldb.com/?id.303340 https://vuldb.com/?submit.549229 https://magnificent-dill-351.notion.site/Improper-Authentication-in-TinyWebServer-1-0-1c9c693918ed80cfa0f5db1a1d03c5e7

Frequently Asked Questions

What is CVE-2025-3268? +

A vulnerability has been found in qinguoyi TinyWebServer up to 1.0 and classified as critical. This vulnerability affects unknown code of the file http/http_conn.cpp. The manipulation of the argument m_url_real leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-3268? +

CVE-2025-3268 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-3268? +

CVE-2025-3268 affects products from qinguoyi, specifically: tinywebserver. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-3268? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-47202

Kavita is a cross platform reading server. Prior to 0.9.0.2, an Improper Token validation flaw permits a remote and unauthenticated …

CVE-2026-61740

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.4, when LightRAG is deployed with LIGHTRAG_API_KEY set but AUTH_ACCOUNTS unset, …

CVE-2026-47159

Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO discovery and pre-validation flow returned organization-related SSO …

CVE-2026-44720

OpenLearnX is an open-source, decentralized learning and assessment platform. Prior to 2.0.4, a critical authentication vulnerability was identified in OpenLearnX …

CVE-2025-24032

PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. Prior to version 0.6.13, if cert_policy …

CVE-2024-5174

A flaw in Gliffy results in broken authentication through the reset functionality of the application.

CVE-2025-3268