CVE-2020-37256: getgrav grav Cross-site Scripting
CVSS: 5.4v3.1MediumAnalyzed
Published 25-06-2026Last modified 08-10-2026
Vulnerability summary
CVE-2020-37256 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in getgrav grav. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 19.9% of scored vulnerabilities.
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)EPSS score
0.29%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 25-06-2026PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Grav before 1.6.30 contains a cross-site scripting vulnerability in the Admin plugin page editor default security configuration. Privileged users with page editing capabilities can inject malicious scripts to execute arbitrary code and install malicious plugins for system access.
CVSS metrics
4 scores · 2 sources · 2 versionsMedium 5.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:NSourcesAll 2 agree
- NVDNIST5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Medium 5.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
0.00 pp
From 0.29% on 20-09-2026
20-09-202620-10-2026
EPSS score0.29%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
2 vendors · 2 products