CVE-2026-56700
Grav CMS <2.0.0-beta.2: RCE via unsafe unserialize and OS command injection.
Is CVE-2026-56700 being exploited?
Not confirmed. CVE-2026-56700 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 2.5% probability of exploitation in the next 30 days.
How severe is CVE-2026-56700?
CVE-2026-56700 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-56700?
Yes. A fix has been recorded for CVE-2026-56700. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-56700 affect?
CVE-2026-56700 affects Grav CMS (pre-2.0.0-beta.2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-56700?
Upgrade to Grav 2.0.0-beta.2 or newer; verify plugins/themes.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via unsafe PHP object injection from unserialize; OS command injection during plugin/theme install; Twig SSR bypass.
Patch when possible
- affected< 2.0.0-beta.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.