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High severity · published Sep 8, 2026
CVE-2026-3174
Event Tickets and Registration <= 5.27.4 - Missing Authorization to Unauthenticated Stripe Credentials Update
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
The Event Tickets and Registration plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the Stripe OAuth return endpoint in all versions up to, and including, 5.27.4. This makes it possible for unauthenticated attackers to overwrite the site's Stripe merchant credentials (access tokens, publishable keys, and account ID), diverting all subsequent payment processing to the attacker's Stripe account.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ET
Event Tickets and Registration · stellarwp
through 5.27.4 · source: vendor
Affected product
ET
Event Tickets and Registration
stellarwp
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3174
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3174
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/event-tickets/trunk/src/Tickets/Commerce/Gateways/Stripe/Merchant.php#L208
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/event-tickets/trunk/src/Tickets/Commerce/Gateways/Stripe/REST/Return_Endpoint.php#L50
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3472837/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/8b13a072-f90f-4982-b4d1-d0b9903e59ea?source=cve
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