CVE-2026-28562: wpForo Forum 2.4.14 SQL Injection via Topics ORDER BY Parameter

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-28 · updated 2026-06-17
Weakness: CWE-89

Description

wpForo 2.4.14 contains an unauthenticated SQL injection vulnerability in Topics::get_topics() where the ORDER BY clause relies on ineffective esc_sql() sanitization on unquoted identifiers. Attackers exploit the wpfob parameter with CASE WHEN payloads to perform blind boolean extraction of credentials from the WordPress database.

Affected products

tomdever wpForo Forum: from 2.4.0 before 2.4.15 — fixed in 2.4.15

How to fix

Upgrade to a fixed version: tomdever wpForo Forum 2.4.15. Check the vendor advisory for mitigations.

References

https://wordpress.org/plugins/wpforo/
https://wordpress.org/plugins/wpforo/#developers
https://www.vulncheck.com/advisories/wpforo-sql-injection-via-topics-order-by-parameter

Get alerted when CVE-2026-28562 or the next vulnerability affects your stack