High severity · published Dec 1, 2025
CVE-2025-66298
Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details (including plugin configuration details) by using the correct POST payload to exploit a Server-Side Template (SST) vulnerability. Sensitive information may be contained in the configuration details. This vulnerability is fixed in 1.8.0-beta.27.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
grav · getgrav
< 1.8.0-beta.27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66298
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66298
Patch
https://github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458
Exploit
https://github.com/getgrav/grav/security/advisories/GHSA-8535-hvm8-2hmv
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