7.5

CVE-2026-3174: stellarwp event tickets and registration Missing Authorization

CVSS: 7.5v3.1HighDeferred
Published 08-09-2026Last modified 09-09-2026
Open JSON

Vulnerability summary

CVE-2026-3174 is a high (CVSS 7.5) Missing Authorization vulnerability in stellarwp event tickets and registration. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39% of scored vulnerabilities. Fixed in 5.27.4.1.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.47%
0%100%
Low · +0.20 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-09-2026
    PublishedVulnerability first disclosed.
  2. 09-09-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.20 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.47%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Stellarwp1 product
Wordpress1 product
  • event-tickets≤ 5.27.4 (fixed in 5.27.4.1)

2 vendors · 2 products

References

5 links