EUVD-2026-56930
GHSA-f2vh-3ghc-c5xc
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AC:H reflects mandatory non-default Apache directory listing and time-limited migration window; no integrity or availability impact per description.
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.
Articles & Coverage 3
AnalysisAI
Unauthenticated credential theft in the InstaWP Connect WordPress migration plugin (all versions ≤ 0.1.3.6) exposes database access details and API signatures on Apache servers during active migration windows. The plugin predictably derives its AES-256-CBC decryption passphrase as SHA256(migrate_key), where the migrate_key is directly leaked in the filename of the unprotected options file via Apache directory listing - allowing an attacker who finds the file to mathematically recover the encryption key and decrypt the options payload without any brute force. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires four concurrent conditions, all of which must be present simultaneously. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD-assigned CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) overstates practical exploitability by rating attack complexity as Low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scanning for WordPress sites with InstaWP Connect installed (e.g., via response headers, sitemap patterns, or plugin enumeration) identifies a target mid-migration hosted on Apache. They browse to https://target.example.com/wp-content/instawpbackups/ and the directory listing reveals a file named options-a1b2c3d4e5f6....txt; they extract the 40-character migrate_key from the filename, compute SHA256(migrate_key) as the AES-256-CBC passphrase, download and decrypt the options file, and recover the WordPress database credentials and InstaWP api_signature - enabling unauthorized database access or API-level site takeover. … |
| Remediation | Update the InstaWP Connect plugin to a version incorporating SVN changeset 3634049 (plugins.trac.wordpress.org/changeset/3634049/instawp-connect), which is the upstream fix confirmed by Wordfence and the plugin repository. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all active deployments of InstaWP Connect plugin versions 0.1.3.6 and below; immediately disable the plugin and interrupt any running migrations. …
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