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CVE-2026-40504
CRITICAL9.8
Description
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.
CVE Details
CVSS v3.1 Score9.8
SeverityCRITICAL
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published4/16/2026
Last Modified4/17/2026
Sourcenvd
Honeypot Sightings0
Weaknesses (CWE)
CWE-122
References
https://github.com/marcobambini/gravity/commit/18b9195598d9b944376754c6d1ad76e38a4adca1(disclosure@vulncheck.com)
https://github.com/marcobambini/gravity/issues/437(disclosure@vulncheck.com)
https://github.com/marcobambini/gravity/releases/tag/0.9.6(disclosure@vulncheck.com)
https://www.vulncheck.com/advisories/creolabs-gravity-heap-buffer-overflow-via-gravity-vm-exec(disclosure@vulncheck.com)
IOC Correlations
No correlations recorded
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