# CVE-2018-19836: Cross-site scripting in n/a

> Attackers can bypass XSS filters by manipulating HTTP headers and cookies in Metinfo CMS, potentially leading to script injection.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 3 Dec 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-6crq-3244-cpgv

## What is CVE-2018-19836?

CVE-2018-19836 is a medium-severity cross-site scripting vulnerability in Metinfo Metinfo, published on 3 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

In Metinfo 6.1.3, include/interface/applogin.php allows setting arbitrary HTTP headers (including the Cookie header), and common.inc.php allows registering variables from the $_COOKIE value. This issue can, for example, be exploited in conjunction with CVE-2018-19835 to bypass many XSS filters such as the Chrome XSS filter.

Weakness: CWE-913 (Improper Control of Dynamically-Managed Code Resources), CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2018-19836?

It affects 1 product.


Products: Metinfo Metinfo.

## How do I fix CVE-2018-19836?

No fix has been published for CVE-2018-19836 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-19836 being exploited?

There is no known exploitation of CVE-2018-19836 in the wild and no public exploit code.

## Other vulnerabilities in Metinfo Metinfo

- [CVE-2022-22295](https://insights.sbomify.com/CVE-2022-22295/): SQL injection in n/a (critical 9.8)
- [CVE-2022-23335](https://insights.sbomify.com/CVE-2022-23335/): SQL injection in n/a (critical 9.8)
- [CVE-2020-21127](https://insights.sbomify.com/CVE-2020-21127/): SQL injection in n/a (critical 9.8)
- [CVE-2020-19305](https://insights.sbomify.com/CVE-2020-19305/): Path traversal in n/a (critical 9.8)
- [CVE-2020-18175](https://insights.sbomify.com/CVE-2020-18175/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19836 and fix it if it is affected.

What it is: CVE-2018-19836 is a medium-severity cross-site scripting vulnerability in Metinfo Metinfo, published on 3 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-19836 in the wild and no public exploit code.

Affected product: Metinfo Metinfo. 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-2018-19836/ (Markdown: https://insights.sbomify.com/CVE-2018-19836/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19836
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19836
- OSV: https://osv.dev/vulnerability/CVE-2018-19836

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19836/
Summaries are generated and may contain mistakes; the official description above is the record.