# CVE-2019-10092: Cross-site scripting in Apache HTTP Server

> An attacker can exploit a cross-site scripting vulnerability in the mod_proxy error page of Apache HTTP Server when proxying is enabled and misconfigured.

- **Severity:** Medium 6.1 (`CVSS:3.1/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:** Yes
- **Published:** 26 Sep 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-10092, CLEANSTART-2026-KO94299, DEBIAN-CVE-2019-10092, DSA-4509-3, GHSA-qrr6-fpf4-x3v4, SUSE-SU-2021:0779-1, UBUNTU-CVE-2019-10092

## What is CVE-2019-10092?

CVE-2019-10092 is a medium-severity cross-site scripting vulnerability in Apache Http Server, published on 26 Sep 2019. 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 Apache HTTP Server 2.4.0-2.4.39, a limited cross-site scripting issue was reported affecting the mod_proxy error page. An attacker could cause the link on the error page to be malformed and instead point to a page of their choice. This would only be exploitable where a server was set up with proxying enabled but was misconfigured in such a way that the Proxy Error page was displayed.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-10092?

It affects 10 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apache2` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.4.23-29.69.1 |
| `apache2` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.4.23-29.69.1 |
| `apache2` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 2.4.23-29.69.1 |

Products: Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Netapp Clustered Data Ontap, Opensuse Leap, Oracle Communications Element Manager, Oracle Enterprise Manager Ops Center, Oracle Secure Global Desktop, Redhat Software Collection.

## How do I fix CVE-2019-10092?

Apply the vendor's patch.

## Is CVE-2019-10092 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-10092 exists.

Public exploit code:

- CVE-2019-10092 Docker - Apache HTTP Server (github_poc): https://github.com/motikan2010/CVE-2019-10092_Docker
- Apache Httpd mod_proxy - Error Page Cross-Site Scripting (exploitdb)
- CVE-2019-10092: Limited Cross-Site Scripting via "Proxy Error" Page in Apache HTTP Server (github_poc): https://github.com/mbadanoiu/CVE-2019-10092
- Apache HTTP Server <=2.4.39 - HTML Injection/Partial Cross-Site Scripting (nuclei): http/cves/2019/CVE-2019-10092.yaml

## Other vulnerabilities in Apache Http Server

- [CVE-2021-42013](https://insights.sbomify.com/CVE-2021-42013/): Apache HTTP Server Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2024-38475](https://insights.sbomify.com/CVE-2024-38475/): Apache HTTP Server Improper Escaping of Output (critical 9.1, exploited in the wild)
- [CVE-2021-40438](https://insights.sbomify.com/CVE-2021-40438/): Apache HTTP Server-Side Request Forgery (SSRF) (critical 9.0, exploited in the wild)
- [CVE-2019-0211](https://insights.sbomify.com/CVE-2019-0211/): Apache HTTP Server Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2021-41773](https://insights.sbomify.com/CVE-2021-41773/): Apache HTTP Server Path Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10092 and fix it if it is affected.

What it is: CVE-2019-10092 is a medium-severity cross-site scripting vulnerability in Apache Http Server, published on 26 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-10092 exists.

Affected product: Apache Http Server. 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-2019-10092/ (Markdown: https://insights.sbomify.com/CVE-2019-10092/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10092
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10092
- OSV: https://osv.dev/vulnerability/CVE-2019-10092

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10092/
Summaries are generated and may contain mistakes; the official description above is the record.