Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
Summary
A Reflected Cross-Site Scripting (XSS) vulnerability was identified in the /admin/pages/[page] endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[header][content][items] parameter.
Details
Vulnerable Endpoint: GET /admin/pages/[page]
Parameter: data[header][content][items]
The application fails to properly validate and sanitize user input in the data[header][content][items] parameter. As a result, attackers can craft a malicious URL with an XSS payload. When this URL is accessed, the injected script is reflected back in the HTTP response and executed within the context of the victim's browser session.
PoC
Payload:
"><ImG sRc=x OnErRoR=alert('XSS-PoC3')>
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Log in to the Grav Admin Panel and navigate to Pages.
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Create a new page or edit an existing one.
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In the Advanced > Blog Config > Items field (which maps to
data[header][content][items]), insert the payload above.
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Save the page.
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The malicious payload is reflected and rendered by the application without proper sanitization. The JavaScript code is immediately executed in the browser.
Impact
Reflected cross-site scripting (XSS) attacks can have serious consequences, including:
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User actions: Attackers can perform actions on behalf of the user
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Data theft: Sensitive information such as session cookies can be stolen
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Account compromise: Attackers may impersonate legitimate users
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Malicious code execution: Arbitrary JavaScript code can run in the user’s browser
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Website defacement or misinformation: Malicious output may be injected visually
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User redirection: Victims may be redirected to phishing or malicious websites
by CVE-Hunters
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | getgrav/grav | < 1.8.0-beta.27 | 1.8.0-beta.27 |
Referencias
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
getgrav/grav- Publicada
- 02.12.2025
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-65mj-f7p4-wggq - CC BY 4.0
Historial de vulnerabilidades: getgrav/grav
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 99
- Primera → última
- 11.2019 09.2026
- Sin corrección
- 6
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 7
- Alta 47
- Media 41
- Baja 4
Divulgaciones por año
- 2019: 1
- 2020: 1
- 2021: 4
- 2022: 10
- 2023: 5
- 2024: 8
- 2025: 23
- 2026: 47
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Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab esta entrada
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