CVE-2026-4794 PUBLISHED

Multiple cross-site scripting (XSS) vulnerabilities in PaperCut NG/MF

Assigner: PaperCut
Reserved: 25.03.2026 Published: 31.03.2026 Updated: 31.03.2026

Multiple cross-site scripting (XSS) vulnerabilities in PaperCut NG/MF before 25.0.10 allow authenticated administrator users to inject arbitrary web script or HTML code via different UI fields. This could be used to compromise other admininistrator's sessions or perform unauthorized actions via the administrator's authenticated context (e.g. requires an active login session).

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS Score: 2.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	Low
Attack Complexity	Low	Integrity	None	Integrity	Low
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	PaperCut
Product	PaperCut NG/MF
Versions	Default: unaffected affected from 0 to 25.0.10 (excl.)

References

https://www.papercut.com/kb/Main/papercut-ng-mf-security-bulletin-march-2026/

Problem Types

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE

Impacts

CAPEC-591 Reflected XSS
CAPEC-592 Stored XSS
CAPEC-63 Cross-Site Scripting (XSS)