Auth bypass in Eventin

CVE-2026-13173

The Eventin WordPress plugin before 4.1.21 does not verify the current user's permission to edit other users before assigning roles and updating user metadata during speaker creation, allowing users with contributor-level access and above to modify other users' roles and metadata.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-13173: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Eventin

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-13173?
CVE-2026-13173 is a low-severity vulnerability in Eventin, classified under Missing Authorization. CVSS score: 2.7/10. Published 2026-08-19.
How severe is CVE-2026-13173?
Low severity. CVSS v3 base score is 2.7 out of 10.