---
title: "CVE-2023-2533: PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-2533/
description: "CVE-2023-2533 (PaperCut NG/MF): Exploited in the wild (CISA KEV). A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-06-20
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-2533"
kev: true
cvss: 8.4
epss: 0.28621
license: All rights reserved. Quote with attribution and a link.
---

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

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run PaperCut NG/MF. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-07-28, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-08-18 ; treat that as the outer limit, not the target.
- EPSS 28.6% , percentile 98: FIRST’s model estimates a 28.6% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.

## What it is

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.

## Affected products (CVE record)

- PaperCut PaperCut NG/MF: 22.0.10 < 2.1.1

## Severity

- Fluid Attacks CVSS 3.1: 8.4 `CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2025-07-28; federal due date 2025-08-18. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 28.62% probability of exploitation activity in the next 30 days; percentile 98.

## Sources

- [Listed in CISA KEV notes (papercut.com)](https://www.papercut.com/kb/Main/SecurityBulletinJune2023)
- [CVE.org record CVE-2023-2533](https://www.cve.org/CVERecord?id=CVE-2023-2533)
- [NVD entry CVE-2023-2533](https://nvd.nist.gov/vuln/detail/CVE-2023-2533)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533)
- [fluidattacks.com](https://fluidattacks.com/advisories/arcangel/)

---
Source page: https://erroneo.us/security/cve/CVE-2023-2533/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt