Vulnerability · Published Aug 18, 2026 · Assigned by VulnCheck

CVE-2026-74908Grav plugin-api before 1.0.15 Script Injection via SVG

Medium 4.6

In plain English

A medium-severity cross-site scripting in grav from getgrav. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.3%top 82.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Grav plugin-api before 1.0.15 contains a script injection vulnerability where the SVG sanitizer only checks for the exact extension 'svg', allowing .svgz and .xhtml files to bypass sanitization and be stored unsanitized. Attackers with api.media.write permission can upload files containing executable script payloads that execute in the site origin when accessed by administrators or visitors.

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav	0 – before 1.0.15

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-66xf-ggf4-6hmc) vendor-advisory
VulnCheck Advisory: Grav plugin-api before 1.0.15 Script Injection via SVG third-party-advisory