CVE-2026-40504
Creolabs Gravity < 0.9.6 Heap Buffer Overflow via gravity_vm_exec
CVSS Score
9.8
EPSS Score
0.1%
EPSS Percentile
22th
Creolabs Gravity before 0.9.6 contains a heap buffer overflow vulnerability in the gravity_vm_exec function that allows attackers to write out-of-bounds memory by crafting scripts with many string literals at global scope. Attackers can exploit insufficient bounds checking in gravity_fiber_reassign() to corrupt heap metadata and achieve arbitrary code execution in applications that evaluate untrusted scripts.
| CWE | CWE-122 |
| Vendor | marcobambini |
| Product | gravity |
| Published | Apr 16, 2026 |
| Last Updated | Apr 16, 2026 |
Stay Ahead of the Next One
Get instant alerts for marcobambini gravity
Be the first to know when new critical vulnerabilities affecting marcobambini gravity are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
marcobambini / gravity
0 < 0.9.6 0 < 18b9195598d9b944376754c6d1ad76e38a4adca1
References
github.com: https://github.com/marcobambini/gravity/releases/tag/0.9.6 github.com: https://github.com/marcobambini/gravity/issues/437 github.com: https://github.com/marcobambini/gravity/commit/18b9195598d9b944376754c6d1ad76e38a4adca1 vulncheck.com: https://www.vulncheck.com/advisories/creolabs-gravity-heap-buffer-overflow-via-gravity-vm-exec
Credits
segv0x