CVE-2026-13176

Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce < 4.1.21 - Authenticated (Contributor+) Server-Side Request Forgery

2026-08-24 00:00
Yaswanth Reddy Sunkara

Strategic Overview

Status
Patched in 4.1.21
Affected Plugin
Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Affected Version
< 4.1.21
CVSS
6.4Medium
Weakness type
CWE-918 · Server-Side Request Forgery (SSRF)
CVE
CVE-2026-13176
View all Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce vulnerabilities

At a glance

CVE-2026-13176 is a medium-severity Server-Side Request Forgery (SSRF) vulnerability in the Eventin WordPress plugin, affecting versions < 4.1.21. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 4.1.21; sites on affected versions should update now. Disclosed August 2026, reported by Yaswanth Reddy Sunkara.

Vulnerability Overview

The Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to 4.1.21. This makes it possible for authenticated attackers, with contributor-level access and above, to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services.

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 interaction from a victim user.

CWE-918: Server-Side Request Forgery (SSRF)

Reaching this weakness in Eventin < 4.1.21 takes an account at Contributor level or above. Server-side request forgery means the application fetches a URL supplied by the caller, turning the server into a proxy for requests the attacker could not make directly.

The request originates from inside the hosting network, which is how these flaws reach cloud metadata endpoints, internal admin panels and services that trust local traffic. For Eventin the fix is 4.1.21: builds < 4.1.21 are affected, anything from 4.1.21 onward is not.

Remediation

Update to version 4.1.21, or a newer patched version

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Eventin 4.1.21 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-13176https://www.wordfence.com/threat-intel/vulnerabilities/id/dd2d1562-2017-45d1-bbd1-46ffd610e7achttps://nvd.nist.gov/vuln/detail/CVE-2026-13176

Related records

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