CVE-2026-61607 (GCVE-0-2026-61607)

Vulnerability from cvelistv5 – Published: 2026-08-19 15:18 – Updated: 2026-08-21 19:35
VLAI
Title
Grav API Plugin: Stored XSS via SVG Upload - API Media Pipeline Bypasses Sanitizer
Summary
Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.2, the Grav API plugin POST /api/v1/media pipeline in HandlesMediaUploads::processUploadedFile() validates an SVG filename extension but does not invoke Security::sanitizeSVG(). An attacker with api.media.write permission can store an SVG containing JavaScript, and the server returns the file as Content-Type: image/svg+xml so the script executes when a victim opens it, allowing session data theft and authenticated actions. This issue is fixed in version 1.0.2.
Severity
4.6 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:34 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7840 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
getgrav grav-plugin-api Affected: < 1.0.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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