CVE-2025-66843
MEDIUMGrav < 1.7.49.5 - Authenticated Stored Cross-Site Scripting in Page Editing Functionality
Title source: llmDescription
grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.
References (1)
Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory
https://github.com/Yohane-Mashiro/grav_cve/issues/1
Scores
CVSS v3
5.4
EPSS
0.0014
EPSS Percentile
3.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
getgrav/grav
< 1.7.49.5
getgrav/grav
0Packagist
Published
Dec 15, 2025
Tracked Since
Feb 18, 2026