What is CVE-2026-56700?

CVE-2026-56700 is a critical-severity vulnerability in Grav, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-30.

How severe is CVE-2026-56700?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Grav

CVE-2026-56700

Grav CMS before 2.0.0-beta.2 contains multiple code-execution vulnerabilities. Three unsafe unserialize() calls - in Scheduler\JobQueue, Framework\Cache\Adapter\FileCache, and Session - deserialize untrusted data without restricting allowe…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Grav — versions 0, 2.0.0-beta.2

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-502 — Deserialization of Untrusted Data

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56700?: CVE-2026-56700 is a critical-severity vulnerability in Grav, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-30.
How severe is CVE-2026-56700?: Critical severity. CVSS v3 base score is 9.8 out of 10.