Server Side Template Injection (SSTI)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

• CVE-2024-28117: 1.39% estimated exploitation activity in the next 30 days; percentile 72.41 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Grav validates accessible functions through the Utils::isDangerousFunction function, but does not impose restrictions on twig functions like twigarraymap, allowing attackers to bypass the validation and execute arbitrary commands. Details When we accessed twigarraymap like this, we confirmed that the twigFunction object is properly returned. Since the callable property is correctly included, we can access twigarraymap without any restrictions. Since there is no validation on twigarraymap itself, it is possible to call arbitrary function using calluserfunc. PoC Impact Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance.

Published by the source

22 Mar 2024, 16:35 UTC

Last modified by the source

3 Jan 2025, 16:06 UTC

Source last checked

26 Oct 2026, 14:29 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-qfv4-q44r-g7rv

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# Patch Next advisory brief: CVE-2024-28117

Advisory: Server Side Template Injection (SSTI)
IDs: CVE-2024-28117, GHSA-qfv4-q44r-g7rv
Record: https://patchnext.com/advisories/cve-2024-28117 (revision 1, source checked 26 Oct 2026, 14:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: getgrav/grav 1.7.45. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist getgrav/grav: affected < 1.7.45; fixed in 1.7.45

## Suggested inspection (read-only)
- Packagist getgrav/grav: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on getgrav/grav.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-qfv4-q44r-g7rv (GitHub-reviewed advisory GHSA-qfv4-q44r-g7rv lists affected ranges: Packagist getgrav/grav >=0 <1.7.45)

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