Robo Gallery <= 5.1.3 - Authenticated (Author+) Stored Cross-Site Scripting via 'Loading Label' Setting
The Robo Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Loading Label' setting in all versions up to, and including, 5.1.3. The plugin uses a custom |***...***| marker pattern in its fixJsFunction() method to embed raw JavaScript function references within JSON-encoded configuration objects. When a gallery's options are rendered on the frontend, json_encode() wraps all string values in double quotes. The fixJsFunction() method then strips the "|*** and ***|" sequences, effectively converting a JSON string value into raw JavaScript code. The Loading Label field (stored as rbs_gallery_LoadingWord post_meta) is an rbstext type field that is sanitized with sanitize_text_field() on save. While this strips HTML tags, it does not strip the |***...***| markers since they contain no HTML. When a user inputs |***alert(document.domain)***|, the value passes through sanitization intact, is stored in post_meta, and is later retrieved and output within an inline <script> tag via renderMainBlock() with the quote markers stripped — resulting in arbitrary JavaScript execution. The gallery post type uses capability_type => 'post', allowing Author-level users to create galleries. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page containing the gallery shortcode.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Robo Gallery – Photo & Image Slider | <= 5.1.3 | 5.1.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- WordPress
- Package
Robo Gallery – Photo & Image Slider- Disclosed
- 07.04.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - d8693b7d-693f-450a-89ef-e936a8813ca9 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Robo Gallery – Photo & Image Slider
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 21
- First → latest
- 04.2016 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 18
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 1
- 2023: 4
- 2024: 8
- 2025: 4
- 2026: 3
earlier: 1
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Robo Gallery <= 5.1.3 - Authenticated (Author+) Stored Cross-Site Scripting via 'Loading Label' Setting this entry
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