# CVE-2023-2533: PaperCut NG/MF Cross-Site Request Forgery (CSRF)

> Attackers can trick admins into clicking malicious links to execute arbitrary code or alter security settings in PaperCut NG/MF.

- **Severity:** High 8.4 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 28 Jul 2025 (CISA KEV)
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Jun 2023
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-fhf9-47gc-m9wc

## What is CVE-2023-2533?

CVE-2023-2533 is a high-severity vulnerability in PaperCut NG/MF, published on 20 Jun 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in
PaperCut NG/MF, which, under specific conditions, could potentially enable
an attacker to alter security settings or execute arbitrary code. This could
be exploited if the target is an admin with a current login session. Exploiting
this would typically involve the possibility of deceiving an admin into clicking
a specially crafted malicious link, potentially leading to unauthorized changes.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2023-2533?

It affects 2 products.


Products: Papercut Papercut Mf, Papercut Papercut Ng.

## How do I fix CVE-2023-2533?

No fix has been published for CVE-2023-2533 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 18 Aug 2025.

## Is CVE-2023-2533 being exploited?

Yes. Attackers have exploited CVE-2023-2533 in the wild since at least 28 Jul 2025.

## Other vulnerabilities in PaperCut NG/MF

- [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-2023-27351](https://insights.sbomify.com/CVE-2023-27351/): PaperCut NG/MF Improper Authentication (high 8.2, exploited in the wild)
- [CVE-2023-39143](https://insights.sbomify.com/CVE-2023-39143/): Path traversal in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2533 and fix it if it is affected.

What it is: CVE-2023-2533 is a high-severity vulnerability in PaperCut NG/MF, published on 20 Jun 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: Yes. Attackers have exploited CVE-2023-2533 in the wild since at least 28 Jul 2025.

Affected product: PaperCut NG/MF. 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-2023-2533/ (Markdown: https://insights.sbomify.com/CVE-2023-2533/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2533
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2533
- OSV: https://osv.dev/vulnerability/CVE-2023-2533

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2533/
Summaries are generated and may contain mistakes; the official description above is the record.