---
id: "CVE-2023-2533"
kind: "vulnerability"
aliases: ["CVE-2023-2533"]
title: "A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific\u2026"
severity: "high"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "vendor"
products: [{"name": "PaperCut NG/MF", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "papercut mf", "fixed": ["20.1.8"], "affected": "< 20.1.8", "ecosystem": "vendor"}, {"name": "papercut mf", "fixed": ["21.2.12"], "affected": ">= 21.0.0, < 21.2.12", "ecosystem": "vendor"}, {"name": "papercut mf", "fixed": ["22.1.1"], "affected": ">= 22.0.0, < 22.1.1", "ecosystem": "vendor"}, {"name": "papercut ng", "fixed": ["20.1.8"], "affected": "< 20.1.8", "ecosystem": "vendor"}, {"name": "papercut ng", "fixed": ["21.2.12"], "affected": ">= 21.0.0, < 21.2.12", "ecosystem": "vendor"}, {"name": "papercut ng", "fixed": [], "affected": ">= 22.0.0, <= 22.1.1", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "on-prem", "papercut-mf", "papercut-ng", "print-server", "vendor"]
not_affected_if: ["unknown"]
published_at: "2023-06-20T15:15:11+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-2533", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2533", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific…

PaperCut NG and PaperCut MF print management servers have a cross-site request forgery flaw that lets an attacker make an authenticated admin's browser change security settings or run code. CISA lists it as actively exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:PaperCut NG/MF affected ? fixed ?
- vendor:papercut mf affected < 20.1.8 fixed 20.1.8
- vendor:papercut mf affected >= 21.0.0, < 21.2.12 fixed 21.2.12
- vendor:papercut mf affected >= 22.0.0, < 22.1.1 fixed 22.1.1
- vendor:papercut ng affected < 20.1.8 fixed 20.1.8
- vendor:papercut ng affected >= 21.0.0, < 21.2.12 fixed 21.2.12
- vendor:papercut ng affected >= 22.0.0, <= 22.1.1 fixed ?

## How to check

Identify PaperCut NG/MF server versions in use; the sources do not give affected version ranges.

## Fix

Apply the vendor mitigations per PaperCut's advisory; the sources do not name a fixed version.
If mitigations are unavailable, discontinue use of the product per CISA guidance.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-2533
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-2533

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_