# CVE-2019-8948: Cross-site scripting in n/a

> Attackers can inject scripts into the PaperCut MF/NG user interface, potentially leading to code execution or account takeover.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Feb 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-q4wm-8j25-33f7

## What is CVE-2019-8948?

CVE-2019-8948 is a critical cross-site scripting vulnerability in n/a, published on 20 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

PaperCut MF before 18.3.6 and PaperCut NG before 18.3.6 allow script injection via the user interface, aka PC-15163.

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

## Which versions are affected by CVE-2019-8948?

It affects 2 products.


Products: Papercut Papercut Mf, Papercut Papercut Ng.

## How do I fix CVE-2019-8948?

No fix has been published for CVE-2019-8948 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-8948 being exploited?

There is no known exploitation of CVE-2019-8948 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-27350](https://insights.sbomify.com/CVE-2023-27350/): PaperCut MF/NG Improper Access Control (critical 9.8, exploited in the wild)
- [CVE-2026-82078](https://insights.sbomify.com/CVE-2026-82078/): PaperCut NG/MF Unsafe Reflection (critical 9.4, exploited in the wild)
- [CVE-2026-81578](https://insights.sbomify.com/CVE-2026-81578/): PaperCut NG/MF Missing Authentication for Critical Function (high 8.8, exploited in the wild)
- [CVE-2023-2533](https://insights.sbomify.com/CVE-2023-2533/): PaperCut NG/MF Cross-Site Request Forgery (CSRF) (high 8.4, exploited in the wild)
- [CVE-2023-27351](https://insights.sbomify.com/CVE-2023-27351/): PaperCut NG/MF Improper Authentication (high 8.2, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-8948 and fix it if it is affected.

What it is: CVE-2019-8948 is a critical cross-site scripting vulnerability in n/a, published on 20 Feb 2019. 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-2019-8948 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-2019-8948/ (Markdown: https://insights.sbomify.com/CVE-2019-8948/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8948
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-8948
- OSV: https://osv.dev/vulnerability/CVE-2019-8948

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-8948/
Summaries are generated and may contain mistakes; the official description above is the record.