How severe is CVE-2026-4794?

CVE-2026-4794 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-4794 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4794?

CVE-2026-4794 primarily affects Papercut Papercut Mf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-4794?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-4794 have an EU (EUVD) identifier?

Yes. CVE-2026-4794 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17271.

When was CVE-2026-4794 published?

CVE-2026-4794 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-4794

CVE-2026-4794 is a medium-severity vulnerability in Papercut Papercut Mf with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v4: 2.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17271
Weakness: CWE-79
Affected product: Papercut Papercut Mf
Published: 2026-03-31
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is CVE-2026-4794?: 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).
How severe is CVE-2026-4794?: CVE-2026-4794 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-4794 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4794?: CVE-2026-4794 primarily affects Papercut Papercut Mf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-4794?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4794 have an EU (EUVD) identifier?: Yes. CVE-2026-4794 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17271.
When was CVE-2026-4794 published?: CVE-2026-4794 was published on 2026-03-31 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*

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