InstaWP Connect <= 0.1.3.6 - Unauthenticated Cryptographic Key Disclosure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-13457
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-11 20:17:26 UTC
Updated2026-08-12 21:00:52 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.006230000 probability, percentile 0.467330000 (date 2026-08-12)

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Instawp InstaWP Connect 1-click WP Staging Migration affected 0.1.3.6 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/instawp-connect/tags/0.1.3.4/includes/class-instawp-t... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3634049/instawp-connect [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/f5319467-92f6-4d4f-a76a-12aeb... [email protected] www.wordfence.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: 0xsabre (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-03T07:32:20.000ZVendor Notified
CNA2026-08-11T06:27:45.000ZDisclosed

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