invalid_license
invalid license
The plugin's license metadata is missing, invalid, or inconsistent.
Why It Shows Up
Plugin Check found license information that does not match WordPress.org expectations across the plugin header, readme, or bundled files.
Why It Matters
Clear license metadata helps users and repository reviewers understand whether the plugin can be distributed and modified.
How to Fix
- Declare the license in the plugin header and readme.
- Use a valid SPDX-style license name or a WordPress.org-accepted GPL-compatible license.
- Keep bundled third-party library licenses intact and compatible.
References
Affected Plugins
| Rank | Plugin | Score | Errors | Warnings | Installs | Updated | Top Issue |
|---|---|---|---|---|---|---|---|
| #1 | Product Catalog Feed by PixelYourSite | 22 | 581 | 357 | 8k+ | 2023-10-15 | Output Not Escaped |
| #2 | Seraphinite Accelerator | 22 | 594 | 255 | 50k+ | 2026-06-19 | Output Not Escaped |
| #3 | Uncanny Toolkit for LearnDash | 22 | 539 | 994 | 20k+ | 2026-05-29 | Output Not Escaped |
| #4 | NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization | 23 | 315 | 631 | 100k+ | 2026-06-15 | Output Not Escaped |
| #5 | User Menus – Nav Menu Visibility | 23 | 531 | 1,298 | 80k+ | 2026-05-23 | Non Prefixed Variable Found |
| #6 | TermsFeed AutoTerms: Privacy Policy Generator, Cookie Consent, GDPR, CCPA, Terms & Conditions, Disclaimers, Cookies Policy, EULA | 24 | 939 | 161 | 80k+ | 2026-01-28 | Non Singular String Literal Domain |
| #7 | Transbank Webpay | 27 | 198 | 211 | 10k+ | 2026-04-28 | Non Prefixed Variable Found |
| #8 | Responsive Lightbox & Gallery | 28 | 139 | 513 | 100k+ | 2026-06-19 | Non Prefixed Hookname Found |
| #9 | Post Views Counter | 29 | 179 | 398 | 200k+ | 2026-06-19 | Non Prefixed Hookname Found |
| #10 | Compliance by Hu-manity.co | 31 | 154 | 336 | 900k+ | 2026-06-03 | Missing |
| #11 | Download Attachments | 32 | 69 | 188 | 8k+ | 2026-05-26 | Non Prefixed Hookname Found |
| #12 | Plausible Analytics | 33 | 284 | 67 | 10k+ | 2026-04-02 | Exception Not Escaped |
| #13 | Bootstrap for Contact Form 7 | 35 | 35 | 73 | 10k+ | 2018-05-24 | Recommended |
| #14 | Email Marketing for WooCommerce by Omnisend | 35 | 15 | 21 | 50k+ | 2026-06-08 | Non Prefixed Function Found |
| #15 | Image Watermark | 36 | 76 | 179 | 40k+ | 2026-06-15 | Missing |
| #16 | Page scroll to id | 37 | 38 | 120 | 100k+ | 2026-06-09 | Missing |
| #17 | Afterpay Gateway for WooCommerce | 38 | 183 | 62 | 10k+ | 2025-03-17 | Text Domain Mismatch |
| #18 | Erident Custom Login and Dashboard | 38 | 122 | 28 | 8k+ | 2023-11-30 | Unsafe Printing Function |
| #19 | Ad Invalid Click Protector (AICP) | 39 | 78 | 57 | 10k+ | 2024-07-02 | Text Domain Mismatch |
| #20 | Product Video Gallery for Woocommerce | 39 | 63 | 36 | 10k+ | 2026-05-20 | register setting Missing |
| #21 | WP Server Health Stats | 39 | 66 | 31 | 10k+ | 2024-07-01 | Output Not Escaped |
| #22 | Yandex Metrica | 39 | 92 | 46 | 20k+ | 2026-04-22 | Output Not Escaped |
| #23 | Full Background Manager | 40 | 37 | 24 | 7k+ | 2023-02-08 | Output Not Escaped |
| #24 | iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more | 60 | 405 | 271 | 200k+ | 2026-06-15 | Text Domain Mismatch |
| #25 | WP Search with Algolia | 64 | 33 | 12 | 7k+ | 2026-04-08 | missing direct file access protection |
| #26 | Nginx Helper | 71 | 47 | 60 | 200k+ | 2025-08-21 | Non Prefixed Variable Found |
| #27 | Really Simple Click To Call Bar | 71 | 23 | 3 | 8k+ | 2019-05-31 | Output Not Escaped |
| #28 | Zapier for WordPress | 71 | 11 | 21 | 50k+ | 2025-07-24 | Input Not Sanitized |
| #29 | WC Hide Shipping Methods | 76 | 15 | 5 | 20k+ | 2025-11-06 | Output Not Escaped |
| #30 | Mammoth .docx converter | 83 | 11 | 0 | 20k+ | 2026-03-12 | Output Not Escaped |
| #31 | Title Remover | 86 | 7 | 5 | 70k+ | 2021-06-03 | wp function not compatible with requires wp |
| #32 | Content Control – The Ultimate Content Restriction Plugin! Restrict Content, Create Conditional Blocks & More | 88 | 20 | 116 | 40k+ | 2026-05-23 | Non Prefixed Hookname Found |
| #33 | aThemes Addons for Elementor | 90 | 13 | 96 | 8k+ | 2026-05-14 | Non Prefixed Variable Found |
