CVE-2026-75827
Authenticated RCE via arbitrary file write in Grav CMS <2.0.15.
Is CVE-2026-75827 being exploited?
Not confirmed. CVE-2026-75827 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 0.78% probability of exploitation in the next 30 days.
How severe is CVE-2026-75827?
CVE-2026-75827 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-2026-75827?
Yes. A fix has been recorded for CVE-2026-75827. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-75827 affect?
CVE-2026-75827 affects Grav CMS < 2.0.15, Blueprint dynamic-data bare-function. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-75827?
Upgrade to Grav 2.0.15+, revoke/untrusted page-edit or blueprint-config rights, audit web files
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated users with page-edit or blueprint-config access can append PHP to web files, enabling remote code execution and full site compromise.
Immediate action required
- affected< 2.0.15
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.