What is the CVSS score of CVE-2026-28561?

CVE-2026-28561 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Wpforo Forum are affected by CVE-2026-28561?

Organizations using wpForo Forum 2.4.14 should be aware of moderate risk from CVE-2026-28561, a cross-site scripting vulnerability rated CVSS 5.5.

How to fix or mitigate CVE-2026-28561?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Wpforo Forum CVE-2026-28561

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-28 disclosure@vulncheck.com

XSS Wpforo Forum

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 28, 2026 - 22:16 nvd

MEDIUM 5.5

DescriptionCVE.org

wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows administrators to inject persistent JavaScript via forum description fields echoed without output escaping across multiple theme template files. On multisite installations or with a compromised admin account, attackers set a forum description containing HTML event handlers that execute when any user views the forum listing.

AnalysisAI

wpForo Forum 2.4.14 fails to properly sanitize forum description fields, enabling authenticated administrators to store malicious JavaScript that executes in the browsers of all users viewing forum listings. On multisite installations or when admin credentials are compromised, attackers can leverage this stored XSS to conduct persistent attacks against forum users. …

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment	CVSS 5.5 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

Threat intelligence, references, and detailed analysis are available after sign-in.

More from same product – last 7 days

CVE-2026-49767 CRITICAL Act Now

9.8 Jun 17

Authentication bypass in the wpForo Forum WordPress plugin versions 3.1.0 and earlier allows remote unauthenticated atta

CVE-2026-28561 vulnerability details – vuln.today

Back