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CVE-2026-74907 medium CVSS 5.9

Path Traversal in getgrav/grav (CVE-2026-74907)

Summary

Path traversal in getgrav/grav (CVE-2026-74907). Confidential information can be exposed externally. Exploitable via index.php. Mitigation: upgrade to 2.0.15 or later.

Original description

The description as published by the source.

Verified against: getgrav/grav devel branch, GRAV_VERSION = "2.0.15", file `index.php

Title

Unauthenticated Path Traversal via Missing Directory-Boundary Check in plugin-asset-map.php Static Asset Server (index.php)

Product / Affected Versions

  • Product: getgrav/grav
  • File: index.php (top-level front controller, runs before Grav itself boots)
  • Confirmed present in: devel branch, 2.0.15
  • Precondition: requires user/config/plugin-asset-map.php to exist and contain at least one route-prefix mapping ,this is an opt-in mechanism (per the code comment: "Fast static asset serving for plugins that bundle SPA apps"). No core mechanism generates this file automatically; it's created by a plugin that opts into this fast-path. Not reachable on a stock Grav install with no such plugin. Where reachable, it requires zero authentication.

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') , specific mechanism: a path-prefix containment check performed with plain string comparison (str_starts_with) instead of a directory-boundary-aware comparison, allowing escape into any sibling path whose name happens to extend the base directory's name as a string.

Description

index.php implements a fast-path static file server that runs before Grav's own routing/security stack, gated on the presence of an asset-map file:

$assetMapFile = __DIR__ . '/user/config/plugin-asset-map.php';
if (is_file($assetMapFile…

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-74907 has been found in getgrav/grav.
Attackers can target a specific entry point like index.php over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 5.9/10.
What to do: upgrade getgrav/grav to 2.0.15 or later.
If unsure, ask your IT team or search "getgrav/grav CVE-2026-74907" on the vendor's site.

CVE-2026-74907 (getgrav/grav) — CWE-22 / CVSS v3 5.9
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: index.php / str_starts_with / assets / assets.bak
Patched: 2.0.15 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Path traversal (CWE-22) exists in getgrav/grav. Attackers reach the vulnerable code path via index.php without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of getgrav/grav. Attack surface: index.php / str_starts_with / assets / assets.bak.

🔥 Severity

Severity: Medium (CVSS 5.9/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 2.0.15.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'getgrav/grav' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'getgrav/grav' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で getgrav/grav を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade getgrav/grav to 2.0.15

    ステージング環境で 2.0.15 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

composer getgrav/grav
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.15"}]}]

References

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