CVE-2026-9711

EventON - WordPress Virtual Event Calendar Plugin <= 5.0.11 - Unauthenticated Blind SQL Injection via Search Parameter

2026-06-29 20:41
Nguyen Ngoc Duc (duc193)

Strategic Overview

Status
Unpatched
Affected Plugin
EventON (Pro) - WordPress Virtual Event Calendar Plugin
Affected Version
<= 5.0.11
CVSS
9.8Critical
Weakness type
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE
CVE-2026-9711
View all EventON (Pro) - WordPress Virtual Event Calendar Plugin vulnerabilities

At a glance

CVE-2026-9711 is a critical-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the EventON (Pro) - WordPress Virtual Event Calendar Plugin WordPress plugin, affecting versions <= 5.0.11. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed June 2026, reported by Nguyen Ngoc Duc (duc193).

Vulnerability Overview

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress (full) is vulnerable to SQL Injection via the WordPress 'search' parameter in versions up to, and including, 5.0.11 due to insufficient escaping on the user supplied parameter and lack of preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, granted the "Enable additional search queries" setting is enabled and at least one published event exists.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

EventON (Pro) - WordPress Virtual Event Calendar Plugin <= 5.0.11 carries this weakness at search, and reaching it takes no account at all. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. No fixed build of this plugin is recorded for EventON (Pro) - WordPress Virtual Event Calendar Plugin yet, so installs running <= 5.0.11 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-9711https://www.wordfence.com/threat-intel/vulnerabilities/id/1b5a0c87-59b0-4da4-8949-0957f8e1b479https://nvd.nist.gov/vuln/detail/CVE-2026-9711

Related records

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