CVE-2023-2533
PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 August 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 28.83% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 28 July 2025 · due 18 August 2025
- Weakness
- CWE-352
- Affected
- papercut/papercut mf · papercut/papercut ng
- Source
- help@fluidattacks.com
EPSS 28.8% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.papercut.com/kb/Main/SecurityBulletinJune2023 ; https://nvd.nist.gov/vuln/detail/CVE-2023-2533
References
- https://fluidattacks.com/advisories/arcangel/Exploit, Third Party Advisory
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023Vendor Advisory
- https://fluidattacks.com/advisories/arcangel/Exploit, Third Party Advisory
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.