# CVE-2007-3950: Denial of service in n/a

> Remote attackers can crash the lighttpd web server on 32-bit systems by triggering bugs in debugging messages within specific modules.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Jul 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-3950, GHSA-hx2q-8pcc-xc36

## What is CVE-2007-3950?

CVE-2007-3950 is a medium-severity denial of service vulnerability in n/a, published on 24 Jul 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

lighttpd 1.4.15, when run on 32 bit platforms, allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors involving the use of incompatible format specifiers in certain debugging messages in the (1) mod_scgi, (2) mod_fastcgi, and (3) mod_webdav modules.

## Which versions are affected by CVE-2007-3950?

It affects 1 product.


Products: Lighttpd Lighttpd.

## How do I fix CVE-2007-3950?

Upgrade to a fixed version.

## Is CVE-2007-3950 being exploited?

There is no known exploitation of CVE-2007-3950 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-11072](https://insights.sbomify.com/CVE-2019-11072/): Integer overflow in n/a (critical 9.8)
- [CVE-2007-3949](https://insights.sbomify.com/CVE-2007-3949/): Security feature bypass in n/a (high 8.3)
- [CVE-2007-1870](https://insights.sbomify.com/CVE-2007-1870/): Null dereference in n/a (high 7.8)
- [CVE-2022-30780](https://insights.sbomify.com/CVE-2022-30780/): Denial of service in n/a (high 7.5)
- [CVE-2025-12642](https://insights.sbomify.com/CVE-2025-12642/): HTTP Header Smuggling via Trailer Merge (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-3950 and fix it if it is affected.

What it is: CVE-2007-3950 is a medium-severity denial of service vulnerability in n/a, published on 24 Jul 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2007-3950 in the wild and no public exploit code.

Affected product: n/a. 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-2007-3950/ (Markdown: https://insights.sbomify.com/CVE-2007-3950/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-3950
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-3950
- OSV: https://osv.dev/vulnerability/CVE-2007-3950

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-3950/
Summaries are generated and may contain mistakes; the official description above is the record.