What is CVE-2018-5233?

CVE-2018-5233 is a medium-severity vulnerability in Getgrav Grav Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-19.

How severe is CVE-2018-5233?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2018-5233 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Getgrav Grav Cms

CVE-2018-5233

Cross-site scripting (XSS) vulnerability in system/src/Grav/Common/Twig/Twig.php in Grav CMS before 1.3.0 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to admin/tools.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-03-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.033 (88.1th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

Getgrav Grav Cms

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

sysdream.com/news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-… (Exploit, Third Party Advisory)
www.openwall.com/lists/oss-security/2018/03/15/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5233?: CVE-2018-5233 is a medium-severity vulnerability in Getgrav Grav Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-19.
How severe is CVE-2018-5233?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2018-5233 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.