# CVE-2015-4026: Other in n/a

> Remote attackers can bypass extension restrictions and execute arbitrary files via null byte injection in PHP's pcntl_exec function.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Jun 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-2xvw-fxc9-x223, UBUNTU-CVE-2015-4026

## What is CVE-2015-4026?

CVE-2015-4026 is a high-severity vulnerability in Apple Mac Os X, published on 9 Jun 2015. It can be exploited over the network, with no action from the victim.

### Official description

The pcntl_exec implementation in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 truncates a pathname upon encountering a \x00 character, which might allow remote attackers to bypass intended extension restrictions and execute files with unexpected names via a crafted first argument.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2006-7243.

Weakness: CWE-19

## Which versions are affected by CVE-2015-4026?

It affects 9 products.


Products: Apple Mac Os X, Php Php, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Hpc Node, Redhat Enterprise Linux Hpc Node Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Workstation.

## How do I fix CVE-2015-4026?

Upgrade to a fixed version.

## Is CVE-2015-4026 being exploited?

There is no known exploitation of CVE-2015-4026 in the wild and no public exploit code.

## Other vulnerabilities in Apple Mac Os X

- [CVE-2014-7169](https://insights.sbomify.com/CVE-2014-7169/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild)
- [CVE-2014-6271](https://insights.sbomify.com/CVE-2014-6271/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild)
- [CVE-2012-1823](https://insights.sbomify.com/CVE-2012-1823/): PHP-CGI Query String Parameter (critical 9.8, exploited in the wild)
- [CVE-2021-30713](https://insights.sbomify.com/CVE-2021-30713/): Apple macOS Unspecified (high 7.8, exploited in the wild)
- [CVE-2019-8526](https://insights.sbomify.com/CVE-2019-8526/): Apple macOS Use-After-Free (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-4026 and fix it if it is affected.

What it is: CVE-2015-4026 is a high-severity vulnerability in Apple Mac Os X, published on 9 Jun 2015. It can be exploited over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-4026 in the wild and no public exploit code.

Affected product: Apple Mac Os X. 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-2015-4026/ (Markdown: https://insights.sbomify.com/CVE-2015-4026/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4026
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4026
- OSV: https://osv.dev/vulnerability/CVE-2015-4026

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-4026/
Summaries are generated and may contain mistakes; the official description above is the record.