# CVE-2011-4558: Code injection in n/a

> Remote administrators can execute arbitrary PHP code via crafted input in Tiki CMS, requiring immediate upgrade.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Jan 2020
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-65h6-f878-gg7m

## What is CVE-2011-4558?

CVE-2011-4558 is a high-severity code injection vulnerability in n/a, published on 27 Jan 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Tiki 8.2 and earlier allows remote administrators to execute arbitrary PHP code via crafted input to the regexres and regex parameters.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2011-4558?

It affects 1 product.


Products: Tiki Tiki.

## How do I fix CVE-2011-4558?

No fix has been published for CVE-2011-4558 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-4558 being exploited?

There is no known exploitation of CVE-2011-4558 in the wild and no public exploit code.

Public exploit code:

- Tiki Wiki CMS Groupware 8.2 - 'snarf_ajax.php' Remote PHP Code Injection (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2020-15906](https://insights.sbomify.com/CVE-2020-15906/): Auth bypass in n/a (critical 9.8)
- [CVE-2023-22850](https://insights.sbomify.com/CVE-2023-22850/): Deserialization in n/a (high 8.8)
- [CVE-2023-22853](https://insights.sbomify.com/CVE-2023-22853/): Code injection in n/a (high 8.8)
- [CVE-2018-7304](https://insights.sbomify.com/CVE-2018-7304/): Code injection in n/a (high 8.8)
- [CVE-2023-22851](https://insights.sbomify.com/CVE-2023-22851/): Deserialization in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-4558 and fix it if it is affected.

What it is: CVE-2011-4558 is a high-severity code injection vulnerability in n/a, published on 27 Jan 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-4558 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-2011-4558/ (Markdown: https://insights.sbomify.com/CVE-2011-4558/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-4558
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-4558
- OSV: https://osv.dev/vulnerability/CVE-2011-4558

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-4558/
Summaries are generated and may contain mistakes; the official description above is the record.