Information Disclosure in getgrav/grav (CVE-2026-44738)
Summary
Vulnerability in getgrav/grav (CVE-2026-44738). Confidential information can be exposed externally. Exploitable via admin.pages. Mitigation: upgrade to 2.0.0-rc.2 or later.
Original description
The description as published by the source.
Summary
The Twig sandbox allow-list permits any user with the admin.pages role to call config.toArray() from within a page body, dumping the entire merged site configuration — including all plugin secrets (SMTP passwords, AWS keys, OAuth client secrets, API tokens) — into the rendered HTML. No administrator privileges are required.
Details
The Twig sandbox allow-list in system/config/security.yaml explicitly permits Config::toArray() for the Grav\Common\Config\Config class:
- class: 'Grav\Common\Config\Config'
methods: 'get, toarray, value, default, offsetget, offsetexists'
The config object — which holds the full merged configuration tree including every key under plugins.* — is injected into every sandboxed render in system/src/Grav/Common/Twig/Twig.php (line 292):
$twig_vars = [..., 'config' => $config, ...]
Any editor with admin.pages can save a page with process.twig: true in the frontmatter and the following payload in the body:
{{ config.toArray()|json_encode|raw }}
When the page is rendered, the full config tree is dumped as JSON in the HTML, including all plugin secrets stored under user/config/plugins/*.yaml.
PoC
# Step 1 — Get login nonce
NONCE=$(curl -sc /tmp/cookies.txt http://TARGET/admin \
| grep -oP '(?<=name="login-nonce" value=")[^"]+')
# Step 2 — Login as editor (no admin.super)
curl -sc /tmp/cookies.txt -b /tmp/cookies.txt \
-X POST http://TARGET/admin \
--data-urlenc…
Source: NIST National Vulnerability Database 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-2026-44738 has been found in getgrav/grav.
Attackers can target a specific entry point like admin.pages over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 7.7/10.
What to do: upgrade getgrav/grav to 2.0.0-rc.2 or later.
If unsure, ask your IT team or search "getgrav/grav CVE-2026-44738" on the vendor's site.
CVE-2026-44738 (getgrav/grav) — CWE-200 / CVSS v3 7.7
Attack vector: remote (network-reachable) / no user interaction
Attack surface: admin.pages / config
Patched: 2.0.0-rc.2 — 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.
Information disclosure (CWE-200) exists in getgrav/grav. Attackers reach the vulnerable code path via admin.pages.
Check the vendor advisory for the affected versions of getgrav/grav. Attack surface: admin.pages / config.
Severity: High (CVSS 7.7/10). Confidential information can be exposed externally.
Update to 2.0.0-rc.2.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
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
-
1Identify 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。 -
2Apply patch patch
Upgrade getgrav/grav to 2.0.0-rc.2ステージング環境で 2.0.0-rc.2 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。
-
3Post-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
References
- advisory nvd.nist.gov
- exploit github.com
- package github.com
- web github.com
- web github.com