CVE-2026-86197Grav before 2.0.20 Cross-Site Scripting via Assets Sandbox
Updated under an hour ago ()
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It affects getgrav grav. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets without proper output escaping. Page editors can inject arbitrary script by registering malicious assets or injecting attributes, which are rendered unescaped into document head tags and executed for all visitors including administrators.
- CVSS
- 5.1 MEDIUM (v4.0, 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:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
getgrav grav getgrav:grav (from the name) | before 2.0.20; 2.0.20 not affected | CNA record |
References
- https://github.com/getgrav/grav/security/advisories/GHSA-8hgv-xc77-jmcrvendor-advisory
- https://www.vulncheck.com/advisories/grav-before-2.0.20-cross-site-scripting-via-assets-sandboxthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.