# CVE-2026-90715: marcobambini Gravity udp json-parser gravity_json.c integer overflow

> Remote attackers can trigger an integer overflow in the Gravity UDP JSON parser, potentially causing denial of service or code execution.

- **Severity:** Medium 6.9 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-vpgh-jr2c-rxqw

## What is CVE-2026-90715?

CVE-2026-90715 is a medium-severity vulnerability in marcobambini Gravity, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-190 (Integer Overflow or Wraparound), CWE-189

## Which versions are affected by CVE-2026-90715?


## How do I fix CVE-2026-90715?

No fix has been published for CVE-2026-90715 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90715 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90715 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90715 and fix it if it is affected.

What it is: CVE-2026-90715 is a medium-severity vulnerability in marcobambini Gravity, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90715 exists.

Affected product: marcobambini Gravity. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-90715/ (Markdown: https://insights.sbomify.com/CVE-2026-90715/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90715
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90715
- OSV: https://osv.dev/vulnerability/CVE-2026-90715

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90715/
Summaries are generated and may contain mistakes; the official description above is the record.