CVE-2025-30523
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 · uneditedImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Marcel-NL Super Simple Subscriptions super-simple-subscriptions allows SQL Injection.This issue affects Super Simple Subscriptions: from n/a through <= 1.1.0.
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 confidenceSQL injection vulnerability in the Marcel-NL Super Simple Subscriptions WordPress plugin allows unauthenticated attackers to inject malicious SQL commands through unsanitized user input in plugin parameters. This could allow unauthorized data access, modification, or deletion in the underlying database.
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
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/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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Identify if Super Simple Subscriptions plugin is installedNavigate to WordPress admin > Plugins > Installed Plugins. Look for 'Super Simple Subscriptions' by Marcel-NL in the list.Affected if The plugin appears in the installed plugins list
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Check the installed plugin versionIn the Plugins list, locate Super Simple Subscriptions and note the version number displayed below the plugin name. Compare this to the affected version range if known.Affected if The installed version falls within the affected (vulnerable) version range or is unknown/unpatched
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Confirm the plugin is activeIn WordPress admin > Plugins, verify that Super Simple Subscriptions shows as 'Active' under the plugin status.Affected if The plugin is active and vulnerable version is installed
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Inspect HTTP traffic for suspicious plugin-related requestsReview web server access logs or use a web application firewall (WAF) log analyzer. Look for requests to pages using plugin parameters (e.g., 'sss_', 'subscription', or similar plugin-specific query parameters) containing SQL injection patterns like quotes, UNION, SELECT, or boolean-based payloads.Affected if Malicious SQL injection payloads are observed targeting plugin endpoints
If Super Simple Subscriptions by Marcel-NL is installed, active, and falls within the vulnerable version range, the environment is affected by this SQL injection vulnerability.
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 Super Simple Subscriptions to the latest patched version immediately. If no patch is available, disable the plugin until a fix is released. Audit database access patterns and implement parameterized queries to prevent SQL injection.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-30523 — 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-2025-30523 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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- 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
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