Backup Migration < 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login (CVE-2026-18216) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-18216

Backup Migration < 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login

Answer in brief

CVE-2026-18216 records a Medium severity (CVSS 6.5) vulnerability in Backup Migration < 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login. The current sources do not mark it as known exploited. The current feed maps Unknown/Backup Migration (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Aug 26, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Backup Migration (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Backup Migrationgeneric	>=0 <2.1.7	2.1.7

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Backup Migration.
Review the reported fix. Update Unknown/Backup Migration to 2.1.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.

Quoted source text, attributed separately from HOL analysis.