SimplyBook.me – Booking and reservations calendar
Slug: simplybook · Really Simple Plugins · 20,000+
Overall Score
Excellent quality and security
91
Excellent
What this score means
Scores are calculated on a 100-point scale by analysing six weighted categories: Security, WP.org Readiness, Performance, Code Quality, Accessibility, and Vulnerabilities. Open vulnerabilities are weighted by severity, CVSS, and patch availability, and incomplete source data can reduce confidence slightly.
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Excellent The plugin follows best practices across every measured category. It is well-maintained, low-risk, and recommended for production use.
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Good Strong overall quality with minor areas for improvement. Generally safe to use on most sites.
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Needs Review Some areas of concern detected. Review the full issues report and weigh the risks before installing on production.
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High Risk Significant quality or security problems found. Exercise caution — check the details carefully before using this plugin.
Score computed: May 25, 2026 5:52 pm (3 weeks ago). Vulnerability data mode: Live.
High confidence (100/100) based on metadata completeness and vulnerability evidence quality.
Open vulnerabilities are weighted by severity, CVSS, and patch availability, then adjusted slightly when the source data is incomplete.
High confidence (100/100) based on metadata completeness and vulnerability evidence quality.
Open vulnerabilities are weighted by severity, CVSS, and patch availability, then adjusted slightly when the source data is incomplete.
- Wordfence: June 16, 2026 11:51 pm (31 minutes ago)
AI-Generated Summary
SimplyBook.me – Booking and reservations calendar currently scores 91/100 (excellent). Latest scan findings include 0 errors and 10 warnings.
Strengths
- Overall score is in a strong range for production use.
- No open vulnerabilities are currently recorded in tracked sources.
Recommended Next Actions
- Address warning-level findings to improve maintainability and reduce future risk.
Generated from latest scan and metadata signals. Validate in staging before production changes.
Score Breakdown
Security
72
Needs Review
Why this score?
Top deductions are based on 1 affected rules, reducing this category by 28 total points.
| Rule | Hits | Impact | Share |
|---|---|---|---|
| Security issue: Warning | 7 | -28 | 100% |
WP.org Readiness
99
Excellent
Why this score?
Top deductions are based on 1 affected rules, reducing this category by 1 total points.
| Rule | Hits | Impact | Share |
|---|---|---|---|
| Repo issue: Notice | 1 | -1 | 100% |
Performance
100
Excellent
Why this score?
Top deductions are based on 0 affected rules, reducing this category by 0 total points.
No deductions were applied for this category in the latest score run.
Code Quality
100
Excellent
Why this score?
Top deductions are based on 0 affected rules, reducing this category by 0 total points.
No deductions were applied for this category in the latest score run.
Accessibility
94
Excellent
Why this score?
Top deductions are based on 1 affected rules, reducing this category by 6 total points.
| Rule | Hits | Impact | Share |
|---|---|---|---|
| Accessibility issue: Warning | 3 | -6 | 100% |
Vulnerability Status
100
Excellent
Why this score?
Top deductions are based on 0 affected rules, reducing this category by 0 total points.
No deductions were applied for this category in the latest score run.
Plugin Details
- Version: 3.3.1
- Active Installs: 20,000+
- Last Updated: 2026-05-19 11:45:00
- Tested up to: 7.0
- Requires PHP: 7.4
- Rating: 4.5/5 (17 ratings)
- Support: 6/6 resolved (100%)
- View on WordPress.org
- Download Plugin
Scan Summary
- Errors: 0
- Warnings: 10
- Notices: 1
- Last Scanned: 2026-05-25 16:52:46
- Score confidence: 100/100
Scans are performed automatically once per day, and the report will note when source data is stale or incomplete.
What Changed Since Last Scan
Run at least two completed scans to view issue deltas.
Detected Issues
| Severity | Category | Message | File | Fix Guidance |
|---|---|---|---|---|
| WARNING | SECURITY | Main plugin file does not appear to guard direct access with an ABSPATH check. | simplybook.php |
Quick
Add an ABSPATH guard near the top of the main plugin file to prevent direct execution.
Moderate
Apply the same remediation pattern across security findings and re-scan to confirm warning issues drop.
Advanced
Add automated linting, CI checks, and team review guidance so this issue class is prevented in future releases.
|
| NOTICE | REPO | Plugin package does not include a license file. |
Quick
Add a LICENSE or COPYING file so distribution terms are explicit.
Moderate
Apply the same remediation pattern across repo findings and re-scan to confirm notice issues drop.
Advanced
Add automated linting, CI checks, and team review guidance so this issue class is prevented in future releases.
|
|
| WARNING | SECURITY | Use of base64_decode() detected. | app/Traits/LegacySave.php |
Quick
Ensure any encoded payloads are necessary, documented, and never used to obscure executable logic.
Moderate
Apply the same remediation pattern across security findings and re-scan to confirm warning issues drop.
Advanced
Add automated linting, CI checks, and team review guidance so this issue class is prevented in future releases.
|
| WARNING | SECURITY | Use of unserialize() detected. | app/Traits/LegacySave.php |
Quick
Switch the flagged payload to JSON decoding where practical.
Moderate
If serialization is required, enforce allowed_classes=false and strict input validation before parsing.
Advanced
Move state transfer to signed/typed schemas and add security tests for malformed payloads.
|
| WARNING | SECURITY | Direct database query detected without an immediately visible $wpdb->prepare() wrapper. | app/Traits/LegacySave.php |
Quick
Wrap dynamic SQL arguments with $wpdb->prepare() in the flagged query.
Moderate
Refactor repeated SQL into repository/helper methods that enforce prepared statements by default.
Advanced
Add integration tests and static checks that fail builds when direct dynamic SQL is introduced.
|
| WARNING | SECURITY | Use of base64_decode() detected. | app/Traits/HasEncryption.php |
Quick
Ensure any encoded payloads are necessary, documented, and never used to obscure executable logic.
Moderate
Apply the same remediation pattern across security findings and re-scan to confirm warning issues drop.
Advanced
Add automated linting, CI checks, and team review guidance so this issue class is prevented in future releases.
|
| WARNING | SECURITY | Raw superglobal access detected. | app/Traits/HasAllowlistControl.php |
Quick
Wrap direct request values with sanitization and nonce verification in the affected code path.
Moderate
Centralize request normalization in helper methods so handlers consume validated input only.
Advanced
Adopt typed request DTOs and automated security lint checks for unsanitized superglobal access.
|
| WARNING | SECURITY | Raw superglobal access detected. | app/Features/AbstractLoader.php |
Quick
Wrap direct request values with sanitization and nonce verification in the affected code path.
Moderate
Centralize request normalization in helper methods so handlers consume validated input only.
Advanced
Adopt typed request DTOs and automated security lint checks for unsanitized superglobal access.
|
| WARNING | ACCESSIBILITY | Image markup without an alt attribute detected. | views/admin/complete-onboarding-notice.php |
Quick
Add alt attributes to the flagged image tags, or alt="" for decorative images.
Moderate
Audit all templates/components for missing alternative text and update content guidelines.
Advanced
Integrate accessibility testing in CI (axe/pa11y) and block releases with critical a11y violations.
|
| WARNING | ACCESSIBILITY | Image markup without an alt attribute detected. | views/admin/review-notice.php |
Quick
Add alt attributes to the flagged image tags, or alt="" for decorative images.
Moderate
Audit all templates/components for missing alternative text and update content guidelines.
Advanced
Integrate accessibility testing in CI (axe/pa11y) and block releases with critical a11y violations.
|
| WARNING | ACCESSIBILITY | Image markup without an alt attribute detected. | views/admin/trial-notice.php |
Quick
Add alt attributes to the flagged image tags, or alt="" for decorative images.
Moderate
Audit all templates/components for missing alternative text and update content guidelines.
Advanced
Integrate accessibility testing in CI (axe/pa11y) and block releases with critical a11y violations.
|
Score History
No history available yet. · All-Time High: N/A
All Past Vulnerabilities
No vulnerabilities have been recorded for this plugin yet.