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CVE-2026-69089GHSA-W3F4-8PJ2-599W

Grav CMS before 2.0.11 Path Traversal via watermark

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.0.11
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: total

Summary

Grav CMS 2.0.10 contains a path traversal vulnerability in ImageMedium::watermark(), which passes its unsanitized $image argument to RocketTheme\Toolbox\ResourceLocator\UniformResourceLocator::findResource(). Because the file:// scheme branch only lexically collapses '..' segments without a realpath/containment check, an editor authoring Markdown image syntax with traversal sequences can cause arbitrary image files outside Grav's media sandbox to be composited into a carrier image, which is then cached and served from a public, unauthenticated URL — disclosing those files to anonymous visitors.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • getgrav grav

    fixed in 2.0.11

  • getgrav/gravPackagist

    From 2.0.10 · fixed in 2.0.11

References 5

GitHub · getgrav/grav

vulncheck.com