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CVE-2026-86828

BackWPup < 5.7.7 - Admin+ Path Traversal to RCE via Restore PclZip Fallback

MEDIUM
6.6
CVSS Score
Published: October 8, 2026 at 06:00 AM UTC
Updated: October 8, 2026 at 08:51 PM UTC
1 product affected across 1 vendorBackwpup

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Severity
MEDIUM6.6
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Backwpup· Inpsydewordpress-plugin
90%
0 ≤ v < 5.7.70

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/be8c0eab-1874-4490-b94e-394f62a522f3/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.6MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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