CVE-2025-53829

ownCloud 10 is vulnerable to Relative Path Traversal

HIGH
8
CVSS Score
Published: July 6, 2026 at 02:46 PM UTC
Updated: October 6, 2026 at 10:10 PM UTC
1 product affected across 1 vendorOwncloud

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Severity
HIGH8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

ownCloud is a file storage, synchronization, and sharing application. In ownCloud 10 prior to version 10.15.3, an attacker with administrative privileges can exploit a path traversal vulnerability in the system to execute arbitrary code. Upgrade ownCloud 10 to version 10.15.3 or later to receive a patch.

Affected

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

v < 10.15.3
Affected range stops below 10.15.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-23

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