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.
CVE-2018-5233
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 3.3% (88th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.1
- EG Score
- 6.1MEDIUMmedium confidence
- EG Risk
- 48EG Risk 48/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity61% × 45%Exploitation40% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 3.3%
- EPSS %ILE
- 88th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
March 19, 2018
Last Modified
November 21, 2024
References (4)
- cve@mitrehttp://www.openwall.com/lists/oss-security/2018/03/15/1
- cve@mitrehttps://sysdream.com/news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-cross-site-scripting-xss-vulnerability/
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2018/03/15/1
- af854a3a-2127-422b-91ae-364da2661108https://sysdream.com/news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-cross-site-scripting-xss-vulnerability/
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| getgrav/grav | 0.8.0 ... 1.3.0-rc.5 (106 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 26× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 161 total refreshes for this CVE.
- 2026-10-09 20:03 UTCEPSS rescore
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- 2026-09-11 09:32 UTCEPSS rescore
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- 2026-07-23 01:36 UTCEG score recompute
- 2026-07-22 22:16 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
- 2026-07-21 15:48 UTCOSV refresh
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- 2026-07-04 11:26 UTCOSV refresh
- 2026-07-04 06:28 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Nucleihttp/cves/2018/CVE-2018-5233.yamlFirst seen Jan 1, 2018
Grav CMS <1.3.0 - Cross-Site Scripting
Open source ↗
Related CVEs(same product + same CWE)
Same product
10 shownPackagist:getgrav/grav
Frequently asked(5)
What is CVE-2018-5233?
When was CVE-2018-5233 disclosed?
Is CVE-2018-5233 actively exploited?
What is the CVSS score of CVE-2018-5233?
How do I remediate CVE-2018-5233?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-5233
Is Your Infrastructure Affected by CVE-2018-5233?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.