CVE-2026-40504

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/marcobambini/gravity/commit/18b9195598d9b944376754c6d1ad76e38a4adca1
https://github.com/marcobambini/gravity/issues/437
https://github.com/marcobambini/gravity/releases/tag/0.9.6
https://www.vulncheck.com/advisories/creolabs-gravity-heap-buffer-overflow-via-gravity-vm-exec

Configurations

No configuration.

History

16 Apr 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-16 02:16

Updated : 2026-05-01 14:41

NVD link : CVE-2026-40504

Mitre link : CVE-2026-40504

CVE.ORG link : CVE-2026-40504

JSON object : View

Products Affected

No product.

CWE

CWE-122

Heap-based Buffer Overflow

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