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CVE-2023-37897

23
FAUCET Score

CVE-2023-37897 is a high-severity Server-Side Template Injection (SSTI) vulnerability affecting Grav, a PHP-based web platform. This flaw allows authenticated attackers (administrators or non-admin users with specific permissions) to execute arbitrary code due to an incorrect denylist bypass in a previous security fix. The vulnerability has a CVSS score of 8.8 (High), indicating a network-exploitable issue with low privileges but high impact on confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been observed, and community discussion is minimal, users are strongly advised to upgrade to Grav version 1.7.42.2 or later as there are no known workarounds.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.42CPE matchmatch criteria
cpe:2.3:a:getgrav:grav:1.7.42:*:*:*:*:*:*:*
1.7.42.1CPE matchmatch criteria
cpe:2.3:a:getgrav:grav:1.7.42.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.81%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0281 is in the 84th percentile among its peer group of 17,829 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: getgrav/gravFixed in: 1.7.42.2
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-9436-3gmp-4f53high

grav Server-side Template Injection (SSTI) mitigation bypass

Jul 19, 2023

References

github.com / getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b
Product
github.com / getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7
Patch
github.com / getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53
ExploitMitigationVendor Advisory