CVE-2026-74908
Grav plugin-api before 1.0.15 Script Injection via SVG
- State
- Published
- Severity
- 5.1 Medium
- Published
- Aug 18, 2026
- Updated
- Aug 18, 2026
- Reserved
- Aug 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.6 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
gravgetgrav |
|
References
- GitHub Security Advisory (GHSA-66xf-ggf4-6hmc)vendor-advisory
- VulnCheck Advisory: Grav plugin-api before 1.0.15 Script Injection via SVGthird-party-advisory
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