GHSA-mmwh-j75q-gxp8

Suggest an improvement
Source
https://github.com/advisories/GHSA-mmwh-j75q-gxp8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-mmwh-j75q-gxp8/GHSA-mmwh-j75q-gxp8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-mmwh-j75q-gxp8
Withdrawn
2026-09-17T17:16:43Z
Published
2026-08-03T15:32:48Z
Modified
2026-09-17T17:30:05Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
Duplicate Advisory: Grav: Path Traversal in ImageMedium::watermark() — arbitrary file disclosure via publicly-cached images
Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-w3f4-8pj2-599w. This link is maintained to preserve external references.

Original Description

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-22"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-17T17:16:43Z",
    "nvd_published_at":  "2026-08-03T14:16:29Z",
    "severity":  "HIGH"
}
References

Affected packages

Packagist / getgrav/grav

Package

Name
getgrav/grav
Purl
pkg:composer/getgrav/grav

Affected ranges

Affected versions

2.*
2.0.10

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-mmwh-j75q-gxp8/GHSA-mmwh-j75q-gxp8.json"