InstaWP Connect <= 0.1.3.6 - Unauthenticated Cryptographic Key Disclosure (CVE-2026-13457) | HOL Guard CVE

High · CVSS 7.5CVE-2026-13457

InstaWP Connect <= 0.1.3.6 - Unauthenticated Cryptographic Key Disclosure

Answer in brief

CVE-2026-13457 records a High severity (CVSS 7.5) vulnerability in InstaWP Connect <= 0.1.3.6 - Unauthenticated Cryptographic Key Disclosure. The current sources do not mark it as known exploited. The current feed maps instawp/InstaWP Connect – 1-click WP Staging & 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 11, 2026Updated Aug 12, 2026Source checked Sep 25, 2026First seen by HOL Aug 11, 2026Material review Aug 12, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.5. 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 instawp/InstaWP Connect – 1-click WP Staging & Migration (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
instawp/InstaWP Connect – 1-click WP Staging & Migrationgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for instawp/InstaWP Connect – 1-click WP Staging & Migration.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 11, 2026

Sources and claim methodology

Upstream source description

The InstaWP Connect – 1-click WP Staging & Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 0.1.3.6 via the (top-level script) function. This is due to the plugin stores its encrypted options file as options-{migrate_key}.txt in wp-content/instawpbackups/ without deploying an index.php or .htaccess to prevent directory listing, exposing the 40-character migrate_key on Apache servers with directory indexing enabled, which allows an attacker to derive the AES-256-CBC passphrase via SHA256(migrate_key), decrypt the options file to recover the api_signature. This makes it possible for unauthenticated attackers to get the database access details and api_signature. Exploitation requires the target WordPress site to be hosted on Apache with directory listing enabled (Options +Indexes) for the wp-content/instawpbackups/ directory, and time limited because it can only be exploited during the migration period.

Quoted source text, attributed separately from HOL analysis.