What is the CVSS score of CVE-2026-28554?

CVE-2026-28554 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Wpforo Forum are affected by CVE-2026-28554?

Organizations using wpForo Forum 2.4.14 should be aware of moderate risk from CVE-2026-28554, a missing authorization vulnerability rated CVSS 4.3.

How to fix or mitigate CVE-2026-28554?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Wpforo Forum CVE-2026-28554

MEDIUM

Missing Authorization (CWE-862)

2026-02-28 disclosure@vulncheck.com

Authentication Bypass Wpforo Forum

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 28, 2026 - 22:16 nvd

MEDIUM 4.3

DescriptionCVE.org

wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to approve or unapprove any forum post via the wpforo_approve_ajax AJAX handler. Attackers exploit the nonce-only check by submitting a valid nonce with an arbitrary post ID to bypass moderation controls entirely.

AnalysisAI

Insufficient authorization controls in wpForo Forum 2.4.14 enable authenticated users to manipulate forum post moderation status through the wpforo_approve_ajax handler, allowing them to approve or reject posts outside their assigned permissions. The vulnerability relies on a weak nonce-only validation that fails to verify user role authorization before processing moderation actions. While patches are not currently available, this impacts forum administrators' ability to maintain content moderation integrity on affected installations.

Technical ContextAI

Classified as CWE-862 (Missing Authorization). Affects the wpforo_approve_ajax AJAX component of Wpforo Forum. wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to approve or unapprove any forum post via the wpforo_approve_ajax AJAX handler. Attackers exploit the nonce-only check by submitting a valid nonce with an arbitrary post ID to bypass moderation controls entirely.