CVE-2026-40504
Heap overflow in Creolabs Gravity allows RCE via crafted scripts.
Is CVE-2026-40504 being exploited?
Not confirmed. CVE-2026-40504 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 0.64% probability of exploitation in the next 30 days.
How severe is CVE-2026-40504?
CVE-2026-40504 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-2026-40504?
Yes. A fix has been recorded for CVE-2026-40504. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-40504 affect?
CVE-2026-40504 affects Creolabs Gravity < 0.9.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-40504?
Upgrade to 0.9.6+; review script eval usage.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution via untrusted script evaluation; heap metadata corruption.
Immediate action required
- affected< 0.9.6
- affected< 18b9195598d9b944376754c6d1ad76e38a4adca1
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.