What is the CVSS score of CVE-2026-1251?

CVE-2026-1251 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of WordPress are affected by CVE-2026-1251?

Organizations using for WordPress is vulnerable to Insecure Direct Object Reference in all should be aware of moderate risk from CVE-2026-1251, a IDOR vulnerability rated CVSS 5.4.

How to fix or mitigate CVE-2026-1251?

Within 30 days: Identify affected systems running for WordPress is vulnerable to Insecure Direct Object Refere and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

WordPress CVE-2026-1251

MEDIUM

Authorization Bypass Through User-Controlled Key (CWE-639)

2026-01-31 security@wordfence.com

WordPress

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

CVE Published

Jan 31, 2026 - 07:16 nvd

MEDIUM 5.4

DescriptionCVE.org

The SupportCandy - Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.4.4 via the 'add_reply' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to steal file attachments uploaded by other users by specifying arbitrary attachment IDs in the 'description_attachments' parameter, re-associating those files to their own tickets and removing access from the original owners.

AnalysisAI

Authenticated attackers with subscriber-level access or higher can exploit an insecure direct object reference in the SupportCandy plugin for WordPress (versions up to 3.4.4) to steal file attachments uploaded by other users by manipulating attachment IDs in ticket replies. This allows unauthorized users to reassociate others' files to their own tickets while removing the original owners' access. No patch is currently available.

Technical ContextAI

This vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affects Customer Support Ticket System. The SupportCandy – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.4.4 via the 'add_reply' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to steal file attachments uploaded by other users by specifying arbitrary attachment IDs in the 'description_attachments' parameter, re-associating tho

Affected ProductsAI

Product: Customer Support Ticket System. Versions: up to 3.4.4.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

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CVE-2026-1251 vulnerability details – vuln.today

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