CVEs / CVE-2023-2533
CVE-2023-2533: PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
- Known exploited in the CISA KEV catalog since 28 Jul 2025
- high 8.8 CVSS 3.1 (NVD)
- EPSS 28.8% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
PaperCut NG/MF contains a cross-site request forgery (CSRF) vulnerability, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| PaperCut PaperCut NG/MF | from 22.0.10, before 2.1.1 | 2.1.1 |
Exploitation
| In CISA KEV since | 28 Jul 2025 |
|---|---|
| Due date for US federal agencies | 18 Aug 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-352 |
References
- CVE-2023-2533 on NVD
- CVE-2023-2533 in the CISA KEV catalog
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023 (cited by CISA)
- https://fluidattacks.com/advisories/arcangel/ Exploit, Third Party Advisory
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.