Description
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
Published: 2026-08-28
Score: 8.8 High
EPSS: < 1% Very Low
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 31 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Papercut
Papercut papercut Mf
Papercut papercut Ng
CPEs cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Vendors & Products Papercut
Papercut papercut Mf
Papercut papercut Ng
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Mon, 31 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 31 Aug 2026 15:30:00 +0000


Mon, 31 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-08-28T00:00:00+00:00', 'dueDate': '2026-09-11T00:00:00+00:00'}


Mon, 31 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 29 Aug 2026 04:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Description An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
Title PaperCut MF/NG: Authentication Bypass
Weaknesses CWE-305
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Papercut Papercut Mf Papercut Ng
cve-icon MITRE

Status: PUBLISHED

Assigner: PaperCut

Published:

Updated: 2026-09-01T03:56:08.623Z

Reserved: 2026-08-27T07:34:07.363Z

Link: CVE-2026-81578

cve-icon Vulnrichment

Updated: 2026-08-28T15:43:43.426Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-28T16:18:29.600

Modified: 2026-09-01T04:18:01.990

Link: CVE-2026-81578

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T21:24:40Z

Weaknesses