CVE-2023-2533: PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
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.
Description quoted from the CVE record (assigned by Fluid Attacks, published 2023-06-20).
Weakness: CWE-352 Cross-Site Request Forgery (CSRF)
How it can be exploited
Exploitable over the network with low attack complexity needing high privileges and a user must take an action. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.
- On CISA KEV since
- 2025-07-28
- US federal deadline
- 2025-08-18
- Ransomware use
- Not known
Public exploit evidence (Exploit Observer)
Also known as: CNNVD-202306-1475, EUVD-2023-34012, GHSA-fhf9-47gc-m9wc
Exploit Observer links 1 piece of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (1)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://github.com/allinsthon/cve-2023-2533
Vulnerability databases and vendor advisories (5)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2023-34012
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-fhf9-47gc-m9wc
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-2533
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533
- Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202306-1475
9 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.288
likely to be attacked soon - VEDAS
- 0.740
some exploit evidence - On CISA KEV
- Yes, since 2025-07-28
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| PaperCut PaperCut NG/MF | from 22.0.10 before 2.1.1 | 21.2.12 is not affected; 20.1.8 is not affected |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: papercut papercut_mf, papercut papercut_ng.
How to fix it
Fixed versions stated in the CVE record: 2.1.1.
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.
Vendor guidance:
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023
- https://nvd.nist.gov/vuln/detail/CVE-2023-2533
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
References
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533 (government-resource)
Other references
- https://fluidattacks.com/advisories/arcangel/
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.