# CVE-2026-47621: Race condition in Dynamo

> An attacker can exploit a race condition in NVIDIA Dynamo to cause denial of service and tamper with data.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Aug 2026
- **Updated:** 4 Aug 2026
- **Also known as:** GHSA-q548-vjqw-xrpx

## What is CVE-2026-47621?

CVE-2026-47621 is a medium-severity vulnerability in NVIDIA Dynamo, published on 4 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NVIDIA Dynamo for Linux contains a vulnerability where an attacker could cause a race condition in the LoRA manager singleton initialization. A successful exploit of this vulnerability might lead to denial of service and data tampering.

Weakness: CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition)

## Which versions are affected by CVE-2026-47621?

It affects 1 product.


Products: Nvidia Dynamo.

## How do I fix CVE-2026-47621?

No fix has been published for CVE-2026-47621 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-47621 being exploited?

There is no known exploitation of CVE-2026-47621 in the wild and no public exploit code.

## Other vulnerabilities in NVIDIA Dynamo

- [CVE-2026-24254](https://insights.sbomify.com/CVE-2026-24254/): Memory corruption in Dynamo (critical 9.8)
- [CVE-2026-24253](https://insights.sbomify.com/CVE-2026-24253/): Memory corruption in Dynamo (high 8.2)
- [CVE-2026-47623](https://insights.sbomify.com/CVE-2026-47623/): Deserialization in Dynamo (high 8.2)
- [CVE-2026-24255](https://insights.sbomify.com/CVE-2026-24255/): Other in Dynamo (high 7.5)
- [CVE-2026-47612](https://insights.sbomify.com/CVE-2026-47612/): Path traversal in Dynamo (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-47621 and fix it if it is affected.

What it is: CVE-2026-47621 is a medium-severity vulnerability in NVIDIA Dynamo, published on 4 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-47621 in the wild and no public exploit code.

Affected product: NVIDIA Dynamo. 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-2026-47621/ (Markdown: https://insights.sbomify.com/CVE-2026-47621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-47621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47621
- OSV: https://osv.dev/vulnerability/CVE-2026-47621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-47621/
Summaries are generated and may contain mistakes; the official description above is the record.