Is CVE-2025-59788 in the CISA KEV catalog?

No. CVE-2025-59788 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-59788?

CVE-2025-59788 has a CVSS v3 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2025-59788?

CVE-2025-59788 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59788?

Upgrade nextcloud server to 32.0.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-59788

MEDIUM

6.4

CVSS v3

NVD

Description

Cross-site scripting (XSS) vulnerability in a reachable files_pdfviewer example directory in Nextcloud with versions before 22.2.10.33, 23.0.12.29, 24.0.12.28, 25.0.13.23, 26.0.13.20, 27.1.11.20, 28.0.14.11, 29.0.16.8, 30.0.17, 31.0.10, and 32.0.1 allows attackers to execute arbitrary JavaScript in the context of a user's browser via a crafted PDF file to viewer.html. This issue is related to CVE-2024-4367, but the root cause of this Nextcloud issue is that the product exposes executable example code on a same-origin basis.

CWE-749 CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

nextcloud serverNVD

Affected:>= 32.0.0, < 32.0.1Fixed in:32.0.1CVE-2025-59788derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Exploit1

redteam-pentesting.de

Vendor Advisory1

github.com

Product1

nextcloud.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-25.