# CVE-2011-4078: Denial of service in n/a

> Remote attackers can cause denial of service in Roundcube Webmail by sending emails with URLs in the Subject header, requiring specific PHP versions.

- **Severity:** Medium 5.0 (`AV:N/AC:L/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:** 3 Nov 2011
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2011-4078, GHSA-w3fh-pxv3-4cx4

## What is CVE-2011-4078?

CVE-2011-4078 is a medium-severity denial of service vulnerability in Roundcube Webmail, published on 3 Nov 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

include/iniset.php in Roundcube Webmail 0.5.4 and earlier, when PHP 5.3.7 or 5.3.8 is used, allows remote attackers to trigger a GET request for an arbitrary URL, and cause a denial of service (resource consumption and inbox outage), via a Subject header containing only a URL, a related issue to CVE-2011-3379.

Weakness: CWE-399

## Which versions are affected by CVE-2011-4078?

It affects 1 product.


Products: Roundcube Webmail.

## How do I fix CVE-2011-4078?

Upgrade to a fixed version.

## Is CVE-2011-4078 being exploited?

There is no known exploitation of CVE-2011-4078 in the wild and no public exploit code.

## Other vulnerabilities in Roundcube Webmail

- [CVE-2024-42009](https://insights.sbomify.com/CVE-2024-42009/): RoundCube Webmail Cross-Site Scripting (critical 9.3, exploited in the wild)
- [CVE-2025-68461](https://insights.sbomify.com/CVE-2025-68461/): RoundCube Webmail Cross-site Scripting (high 7.2, exploited in the wild)
- [CVE-2008-5619](https://insights.sbomify.com/CVE-2008-5619/): PHPMailer susceptible to arbitrary code execution (critical 10.0)
- [CVE-2024-37385](https://insights.sbomify.com/CVE-2024-37385/): Command injection in n/a (critical 9.8)
- [CVE-2024-42008](https://insights.sbomify.com/CVE-2024-42008/): Cross-site scripting in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-4078 and fix it if it is affected.

What it is: CVE-2011-4078 is a medium-severity denial of service vulnerability in Roundcube Webmail, published on 3 Nov 2011. 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-2011-4078 in the wild and no public exploit code.

Affected product: Roundcube Webmail. 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-2011-4078/ (Markdown: https://insights.sbomify.com/CVE-2011-4078/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-4078
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-4078
- OSV: https://osv.dev/vulnerability/CVE-2011-4078

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-4078/
Summaries are generated and may contain mistakes; the official description above is the record.