# CVE-2025-3268: qinguoyi TinyWebServer http_conn.cpp improper authentication

> Remote attackers can bypass authentication in TinyWebServer by manipulating the m_url_real argument in http_conn.cpp.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Apr 2025
- **Updated:** 7 Apr 2025
- **Also known as:** GHSA-gq44-92v2-6j39

## What is CVE-2025-3268?

CVE-2025-3268 is a medium-severity authentication bypass vulnerability in qinguoyi TinyWebServer, published on 4 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2025-3268?

It affects 1 product.


Products: Qinguoyi Tinywebserver.

## How do I fix CVE-2025-3268?

No fix has been published for CVE-2025-3268 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-3268 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3268 exists.

## Other vulnerabilities in qinguoyi TinyWebServer

- [CVE-2025-3266](https://insights.sbomify.com/CVE-2025-3266/): qinguoyi TinyWebServer http_conn.cpp stack-based overflow (medium 6.9)
- [CVE-2025-3267](https://insights.sbomify.com/CVE-2025-3267/): qinguoyi TinyWebServer http_conn.cpp sql injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-3268 and fix it if it is affected.

What it is: CVE-2025-3268 is a medium-severity authentication bypass vulnerability in qinguoyi TinyWebServer, published on 4 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3268 exists.

Affected product: qinguoyi TinyWebServer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-3268/ (Markdown: https://insights.sbomify.com/CVE-2025-3268/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3268
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3268
- OSV: https://osv.dev/vulnerability/CVE-2025-3268

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-3268/
Summaries are generated and may contain mistakes; the official description above is the record.