CVE-2025-39591
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMissing Authorization vulnerability in WP Shuffle WP Subscription Forms wp-subscription-forms allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Subscription Forms: from n/a through <= 1.2.3.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe WP Subscription Forms plugin for WordPress contains a missing authorization vulnerability where the plugin fails to properly enforce access control checks on certain functionality. This allows unauthenticated or lower-privileged users to access administrative or subscriber management features that should require higher privilege levels, due to incorrectly configured security levels in the access control implementation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm WP Subscription Forms plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for 'WP Subscription Forms' or check the plugins directory for the plugin files (typically in /wp-content/plugins/)Affected if The plugin is installed and active in WordPress
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Identify the installed plugin versionIn WordPress admin, click on the plugin from the Plugins list to view details, or inspect the main plugin PHP file for a 'Version' header commentAffected if The version is at or below any version known to contain this authorization flaw (compare against the version that includes the patched release)
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Verify access control on subscriber management endpointsAttempt to access subscriber management URLs or API endpoints (such as those handling form submissions and subscriber lists) while logged out or as a low-privilege user (subscriber role)Affected if The endpoints return valid data or allow actions without requiring administrator-level capabilities
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Check for capability checks in plugin codeInspect the main plugin PHP files for function calls that verify user capabilities (such as 'current_user_can()' with appropriate capabilities like 'manage_options') before performing subscriber or form management operationsAffected if Subscriber management functions lack capability checks or use insufficient capability requirements that allow lower-privileged users to access admin functions
If the plugin is installed and unauthenticated or subscriber-level users can access administrative subscriber management features without proper capability verification, the environment is affected by this CVE.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate to the latest version of the plugin if a patched release is available. Otherwise, implement proper authorization checks (using WordPress capability checks and nonce verification) on all form processing and subscriber management endpoints to ensure only authorized users can access these functions.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-39591 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-39591 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data