CVE-2026-40504

CRITICAL SEVERITY

CVSS Score & Metrics

Base Score

9.8 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H                                    

Vulnerability 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.

Vulnerability Details

Published Date

April 16, 2026

Last Modified

April 16, 2026

CWE ID

CWE-122

Source

NVD

Vendor

marcobambini

Product

gravity

External References

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

CVE-2026-40504

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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