What is the CVSS score of CVE-2025-59716?

CVE-2025-59716 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 1.7%.

Which versions of Guests are affected by CVE-2025-59716?

Organizations using ownCloud Guests before 0.12.5 should be aware of moderate risk from CVE-2025-59716, a information exposure vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2025-59716?

Yes, a public proof-of-concept exploit is available for CVE-2025-59716. Prioritise patching immediately. EPSS: 1.7%.

How to fix or mitigate CVE-2025-59716?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

Guests CVE-2025-59716

MEDIUM

Information Exposure (CWE-200)

2025-11-05 cve@mitre.org

Information Disclosure Guests Owncloud

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:20 vuln.today

PoC Detected

Jan 07, 2026 - 17:05 vuln.today

Public exploit code

CVE Published

Nov 05, 2025 - 17:15 nvd

MEDIUM 5.3

DescriptionCVE.org

ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.

AnalysisAI

ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Exposure of Sensitive Information (CWE-200), which allows attackers to access sensitive data that should not be disclosed. ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user. Affected products include: Owncloud Guests. Version information: before 0.12.5.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Minimize information in error messages, implement proper access controls, encrypt sensitive data at rest and in transit.