Answer in brief
CVE-2026-40504 records a Critical severity (CVSS 9.3) vulnerability in Creolabs Gravity < 0.9.6 Heap Buffer Overflow via gravity_vm_exec. The current sources do not mark it as known exploited. The current feed maps marcobambini/gravity (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps marcobambini/gravity (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| marcobambini/gravitygeneric | >=0 <0.9.6 || >=0 <18b9195598d9b944376754c6d1ad76e38a4adca1 | 0.9.6, 18b9195598d9b944376754c6d1ad76e38a4adca1 |
Published upstream
Apr 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.