Which products and versions are affected by CVE-2023-39469?

Affected: Papercut Mf; Papercut Ng; NG versions >= 22.0.12. The full list is in the CVE brief.

Is CVE-2023-39469 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2023-39469 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-39469?

No public exploit code is known.

Is there a fix for CVE-2023-39469?

Fixed versions are available, including Papercut Mf 22.1.1, Papercut Ng 22.1.1.

How urgently should CVE-2023-39469 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2023-39469

High

PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability.

Published May 3, 2024 · Updated Jan 30, 2025

Key Facts

Patch immediately

CVE-2023-39469 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting Papercut Mf, Papercut Ng, NG.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 61% probability of exploitation in the next 30 days.
Fixed versions are available, including Papercut Mf 22.1.1, Papercut Ng 22.1.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.2

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

61%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2023-39469 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability.

The specific flaw exists within the External User Lookup functionality. The issue results from the lack of proper validation of a user-supplied string before using it to execute Java code. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-21013.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Papercut MfPapercut	See advisory	22.1.1
Papercut NgPapercut	See advisory	22.1.1
NG	>= 22.0.12	n/a

Patched Releases

Papercut Mf

22.1.1

Papercut Ng

22.1.1

Timeline

Publicly disclosed
May 3, 2024
Last updated
Jan 30, 2025

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')

References

advisoryvendor-provided URL
advisoryZDI-23-1285

FAQ

Common Questions.

PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability.
Affected: Papercut Mf; Papercut Ng; NG versions >= 22.0.12. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Papercut Mf 22.1.1, Papercut Ng 22.1.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2023-39469 Running On Your Attack Surface?

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