CVE-2025-66309
published 2025-12-01CVE-2025-66309: This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to…
PriorityP425medium6.1CVSS 3.1
AVNACLPRNUIRSCCLILAN
EPSS
0.20%
9.6th percentile
This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta.1, 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. This vulnerability is fixed in 1.11.0-beta.1.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| getgrav | grav | < 1.11.0-beta.1 | 1.11.0-beta.1 |
| getgrav | grav | >= 0 < 1.8.0-beta.27 | 1.8.0-beta.27 |
| getgrav | grav-plugin-admin | <= 1.10.50 | — |
CVSS provenance
nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvdv4.06.2MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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OSV
Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
osv·2025-12-02
CVE-2025-66309 [MEDIUM] Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
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 HTT
GHSA
Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
ghsa·2025-12-02
CVE-2025-66309 [MEDIUM] CWE-79 Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
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 HTT
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-12-01
Published