vulnerability / NVI-00003530 / Revision 1

Grav: Twig sandbox config exfiltration via grav.offsetGet + dump filter (CVE-2026-44738 bypass)

OSV carries this publisher advisory for getgrav/grav. This is an aggregated source copy; consult the original publisher and compare update dates.

source listedactiveGHSA-mc5q-6hpj-rp7j

This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.

01 / Meaning

Why it matters

Published affected context helps an owner decide what evidence to gather. This report has not examined your application.

02 / Applicability

The affected context

Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.

getgrav/grav

source listed

ECOSYSTEM: introduced 0; fixed 2.0.2

### Summary The Twig content sandbox replaces `config` with the redacted `SandboxConfig` facade and strips `Config::get`/`toArray` from the method allowlist (GHSA-j274-39qw-32c9), so editor content can't read config secrets via `config`. That's bypassable: `grav` is the raw container, `offsetget` is allow-listed on it, so `grav.offsetGet('config')` returns the real `Config`. The allow-listed filters `json_encode`/`print_r`/`yaml_encode` then serialize it at the PHP level, never hitting the sandbox method gate, dumping the whole config tree including every `plugins.*` secret (SMTP creds, API keys, plugin DB creds). Incomplete fix for GHSA-j274-39qw-32c9. `security.salt` does not leak (it lives outside config). ### Details The documented path is blocked: `config` is the `SandboxConfig` facade (`Twig.php:660`) and the raw `Config`/`Data` method entries are stripped when `config_access` is false, so `{{ config.get(...) }}` returns the default and `{{ grav.offsetGet('config').get(...) }}` raises `SecurityNotAllowedMethodError`. The bypass uses two allow-listed primitives the redaction doesn't cover: 1. `grav.offsetGet('config')` returns the raw `Config`. The `SandboxConfig` facade

GitHub Advisory Database via OSV

03 / Response

What to do next

vendor patch
The original advisory lists fixed boundaries 2.0.2 for getgrav/grav. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV

A fixed release is not deployment evidence.

Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.

04 / Limits

What this report cannot establish

Customer inventory, deployment, reachability and exploitation have not been inspected.

Read the collection and interpretation limits ↗

05 / Provenance

Sources you can inspect

Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.

GHSA-mc5q-6hpj-rp7j ↗
GitHub Advisory Database via OSV · vendor advisory
Observed Oct 31, 2026. GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.

Public revision history

Only published revisions appear here. Routine fetches do not create a material-change event.

Revision 1 · Oct 31, 2026
First indexed by Null; source disclosure date is shown separately.

Read the public revision data ↗