CVE-2026-2021— Slideshow Gallery LITE <= 1.8.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'alwaysauto' Shortcode Attribute
Possible ATT&CK Techniques 1AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| contrid | Slideshow Gallery LITE | ≤ 1.8.5 | affected |
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I. Basic Information for CVE-2026-2021
Vulnerability Information
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Vulnerability Title
Slideshow Gallery LITE <= 1.8.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'alwaysauto' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Slideshow Gallery LITE plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'alwaysauto' shortcode attribute in all versions up to, and including, 1.8.5. This is due to insufficient input sanitization and output escaping on user-supplied attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Tribulant Slideshow Gallery LITE 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tribulant Slideshow Gallery LITE是Tribulant公司的一个图片幻灯片展示插件。 Tribulant Slideshow Gallery LITE 1.8.5及之前版本存在跨站脚本漏洞，该漏洞源于通过'alwaysauto'短代码属性的输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上权限）注入任意Web脚本，当用户访问注入页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| contrid | Slideshow Gallery LITE | 0 ~ 1.8.5 | - |
II. Public POCs for CVE-2026-2021
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Patches & Fixes for CVE-2026-2021 (1)
Vendor Pages for CVE-2026-2021 (1)
Other References for CVE-2026-2021 (1)
IV. Related Vulnerabilities
Same vendor: contrid
- CVE-2026-12939
Newsletters <= 4.15 - Authenticated (Contributor+) Stored Cr - CVE-2026-12938
Newsletters <= 4.15 - Authenticated (Contributor+) Stored Cr - CVE-2026-3018
Newsletters <= 4.13 - Unauthenticated SQL Injection via wpml - CVE-2025-4857
Newsletters <= 4.9.9.9 - Authenticated (Administrator+) Loca - CVE-2025-3107
Newsletters <= 4.9.9.8 - Authenticated (Contributor+) SQL In
Same weakness: CWE-79
- CVE-2026-53529
LeafWiki vulnerable to stored XSS via search-result title (h - CVE-2026-33240
Combodo iTop: Reflected XSS in foreign key search criteria - CVE-2026-43980
Malla: Stored XSS via Meshtastic node names in multiple fron - CVE-2026-53468
Typemill has Stored HTML Attribute Injection in Metadata Fie - CVE-2026-31880
Combodo iTop: Reflected XSS in universal search
V. Comments for CVE-2026-2021
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