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CVE-2026-100668— Grav before 2.0.25 Sandbox Escape via array Filter

Quick assessment

Affected
getgrav grav
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grav 2.0.0 至 2.0.24 版本存在 Twig 内容沙箱逃逸漏洞。 过滤器（及其完全相同的函数形式）位于沙箱允许列表（allowlist）中，但与其他受保护项（如 、 、 、 和 ）不同，该过滤器注册时缺少 守卫检查。其实现会调用 方法——若不可用则回退到 强制类型转换——且过程中未咨询沙箱方法允许列表。 由于 是一个基于 Pimple 的原始依赖注入容器的 Twig 全局变量，能够编写页面内容中 Twig 模板的用户可通过执行 读取容器的私有 数组，其中包括未脱敏（un-redacted）的 Conf

CVSS 6.5 · Medium EPSS 0.28% · P18

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-100668

Vulnerability Information
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Vulnerability Title
Grav before 2.0.25 Sandbox Escape via array Filter
Source: CVE Program / CVE List V5
Vulnerability Description
Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape. The `array` filter (and its identical function form) is on the sandbox allowlist but is registered without the needs_is_sandboxed guard that print_r, vardump, json_encode, yaml_encode and string carry, and its implementation calls toArray() — or falls back to an (array) cast — without consulting the sandbox method allowlist. Because the `grav` Twig global is the raw Pimple-based dependency injection container, a user who can author Twig in page content can evaluate `grav|array` to read the container's private $values array, including the un-redacted Config service; a second array cast returns the entire configuration tree, disclosing plugin credentials, SMTP and OAuth secrets, Redis passwords, proxy URLs and the security.* subtree that the sandbox's redaction is meant to hide. Because the payload is stored in page content, the disclosed configuration is rendered to anonymous visitors. Grav 1.7 is not affected as it has no Twig content sandbox. Fixed in Grav 2.0.25.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav 0 ~ 2.0.25 -

II. Public POCs for CVE-2026-100668

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III. Intelligence Information for CVE-2026-100668

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Other References for CVE-2026-100668 (1)

Other References for CVE-2026-100668 (1)

Same Patch Batch · getgrav · 2026-09-26 · 7 CVEs total

CVE-2026-100670 8.8 HIGH Grav CMS 2.0.14 through 2.0.24 Privilege Escalation via Blueprint Guard Bypass
CVE-2026-100673 8.2 HIGH Grav Data Manager before 1.4.5 Stored XSS via item-detail view
CVE-2026-100671 8.0 HIGH Grav before 2.0.25 Session Cookie Theft via Twig Sandbox
CVE-2026-100669 7.5 HIGH Grav before 2.0.25 Sensitive File Disclosure via Case-Variation Bypass
CVE-2026-100672 7.5 HIGH grav-plugin-comments before 1.2.11 Unauthenticated Information Disclosure
CVE-2026-100667 5.3 MEDIUM grav-plugin-login 3.8.7 through 3.9.6 Two-Factor Authentication Bypass

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-200

V. Comments for CVE-2026-100668

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