What is CVE-2026-86828?

CVE-2026-86828 is a medium-severity vulnerability in Backwpup, classified under Path Traversal. CVSS score: 6.6/10. Published 2026-10-08.

How severe is CVE-2026-86828?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Path Traversal in Backwpup

CVE-2026-86828

The BackWPup WordPress plugin before 5.7.7 does not properly restrict the destination path of files extracted during a backup restore when its fallback archive library is used, allowing high-privileged users to write files outside the intended restore directory, potentially leading to remote code execution.

Vulnerability class: Path Traversal (Directory Traversal)

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

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

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-22 — Path Traversal

References

wpscan.com/vulnerability/be8c0eab-1874-4490-b94e-394f62a522f3/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86828?: CVE-2026-86828 is a medium-severity vulnerability in Backwpup, classified under Path Traversal. CVSS score: 6.6/10. Published 2026-10-08.
How severe is CVE-2026-86828?: Medium severity. CVSS v3 base score is 6.6 out of 10.