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VulnerabilityPublished Updated

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

Affects PaperCut NG/MFSource CVE Database V5

0

Exploited in the wild · KEV due 18 Aug 2025 · 28% EPSS : apply the vendor's fix or mitigations to PaperCut NG/MF now.

Data as of 26 Oct 2026, 11:42 UTC

CVSS 3.1 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else.
EPSS
28.8% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 20 Jun 2023

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV 2.1 years after disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Fluid Attacks

    , 46 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. , 2.1 years after disclosure

  4. KEV remediation due

    US federal deadline

    , 2.2 years after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected software

ProductAffectedFixed in
PaperCut PaperCut NG/MFAffected
  • =22.0.10
Fixed in–

Description

CVE-2023-2533 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in PaperCut NG/MF version 22.0.10. It allows an attacker to trick an authenticated administrator into executing unauthorized actions by clicking a malicious link, potentially leading to changes in security settings or arbitrary code execution. Exploitation requires the admin to be logged in and interact with the malicious content. The vulnerability impacts confidentiality, integrity, and availability, with a CVSS score of 8.4. No known exploits are currently in the wild. European organizations using PaperCut NG/MF, especially in sectors with high administrative privileges, should prioritize patching and implement strict access controls to mitigate risk. Countries with significant PaperCut deployments and critical infrastructure are at higher risk.

References

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