PT-2026-60130 · Getgrav · Grav

N00O00B · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-58655

NVD

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

The bundled Grav Flex Objects plugin (getgrav/grav-plugin-flex-objects) before 1.4.0 contains a stored server-side template injection vulnerability. When rendering dynamic collection or object titles, the plugin passes user-controlled frontmatter values (page.header.flex.collection.title or page.header.flex.object.title) to Twig's template from string(), causing them to be evaluated as Twig code rather than treated as text. This path bypasses Grav's Security::cleanDangerousTwig() sanitization. An attacker who can control the title frontmatter of a publicly reachable Flex Objects page can achieve arbitrary Twig execution and escalate to remote command execution via access to internal Grav services such as the scheduler.

Exploit

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-58655

Affected Products

Grav

References · 3

• 🔥 https://github.com/getgrav/grav/security/advisories/GHSA-623v-m3c4-3pw8 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-58655 · Security Note
• https://vulncheck.com/advisories/grav-flex-objects-server-side-template-injection-via-dynamic-titles · Note