Auth bypass in Publishpress Permissions

CVE-2026-84771

Unauthenticated Insecure Direct Object References (IDOR) in PublishPress Permissions <= 4.8.3 versions.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.6% 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-2026-84771: held from 0.002 to 0.003.

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

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-84771?
CVE-2026-84771 is a medium-severity vulnerability in Publishpress Permissions, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-09-02.
How severe is CVE-2026-84771?
Medium severity. CVSS v3 base score is 5.3 out of 10.