CVE-2025-59788

MEDIUM
5.4
CVSS Score
Published: December 4, 2025 at 12:00 AM UTC
Updated: October 18, 2026 at 03:10 PM UTC
1 product affected across 1 vendorNextcloud/server

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Cross-site scripting (XSS) vulnerability in a reachable files_pdfviewer example directory in Nextcloud in Nextcloud’s PDF viewer 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, 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

22.0.0 ≤ v < 22.2.10.3323.0.0 ≤ v < 23.0.12.2924.0.0 ≤ v < 24.0.12.2825.0.0 ≤ v < 25.0.13.2326.0.0 ≤ v < 26.0.13.2027.0.0 ≤ v < 27.1.11.2028.0.0 ≤ v < 28.0.14.1129.0.0 ≤ v < 29.0.16.830.0.0 ≤ v < 30.0.1731.0.0 ≤ v < 31.0.1032.0.0 ≤ v < 32.0.123242526272829303132
Affected range stops below 22.2.10.33, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.0.12.29, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.0.12.28, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.0.13.23, so it looks safe — our inference, not a vendor statement
Affected range stops below 26.0.13.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.1.11.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 28.0.14.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 29.0.16.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 30.0.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 31.0.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 32.0.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-749CWE-79

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