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CVE-2018-5233

32
FAUCET Score

CVE-2018-5233 is a Cross-Site Scripting (XSS) vulnerability affecting Grav CMS versions prior to 1.3.0, specifically within the Twig templating engine. This medium-severity flaw (CVSS 6.1) allows unauthenticated remote attackers to inject malicious web scripts or HTML via the PATH_INFO parameter to the admin/tools interface, potentially leading to information disclosure or session hijacking. While no active exploitation or Metasploit modules are reported, a Nuclei template exists for detection, and there is no significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.0CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.35%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2018-5233 · Jul 27, 2021
This CVE's current EPSS score of 0.0335 is in the 94th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (1)

composerpatch availablevia ghsa
Product: getgrav/gravFixed in: 1.3.0

Vendor Advisories (1)

composerGHSA-977g-93f5-rqjxmedium

Grav CMS Cross-site scripting (XSS) vulnerability

May 14, 2022

References

sysdream.com / news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-cross-site-scripting-xss-vulnerability
ExploitThird Party Advisory
openwall.com / lists/oss-security/2018/03/15/1
ExploitMailing ListThird Party Advisory