What is CVE-2026-86827?

CVE-2026-86827 is a medium-severity vulnerability in Backwpup, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-08.

How severe is CVE-2026-86827?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Backwpup

CVE-2026-86827

The BackWPup WordPress plugin before 5.7.7 does not verify that a request to its cron-triggered backup execution handler actually originates from WordPress's internal scheduled-event dispatch, allowing unauthenticated attackers to force any existing backup job to run immediately, independent of its configured trigger type or schedule.

Vulnerability class: Broken Access Control

Published 2026-10-08 · last modified 2026-10-08.

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:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Backwpup

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

wpscan.com/vulnerability/c7785a5b-f580-416f-a23d-58c28c717b60/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86827?: CVE-2026-86827 is a medium-severity vulnerability in Backwpup, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-08.
How severe is CVE-2026-86827?: Medium severity. CVSS v3 base score is 5.3 out of 10.