# CVE-2026-90506: vvbbnn00 WARP-Clash-API Save Account Job race condition

> A race condition in the Save Account Job allows remote attackers to exploit the system, though high complexity limits feasibility.

- **Severity:** Low 2.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-qmhq-94p4-9589

## What is CVE-2026-90506?

CVE-2026-90506 is a low-severity vulnerability in vvbbnn00 WARP-Clash-API, published on 13 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was determined in vvbbnn00 WARP-Clash-API up to c7bf2360073959861219b422e51ae86411051b46. This impacts an unknown function of the component Save Account Job. This manipulation causes race condition. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is said to be difficult. The exploit has been publicly disclosed and may be utilized. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2026-90506?


## How do I fix CVE-2026-90506?

No fix has been published for CVE-2026-90506 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90506 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90506 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90506 and fix it if it is affected.

What it is: CVE-2026-90506 is a low-severity vulnerability in vvbbnn00 WARP-Clash-API, published on 13 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90506 exists.

Affected product: vvbbnn00 WARP-Clash-API. 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-2026-90506/ (Markdown: https://insights.sbomify.com/CVE-2026-90506/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90506
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90506
- OSV: https://osv.dev/vulnerability/CVE-2026-90506

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90506/
Summaries are generated and may contain mistakes; the official description above is the record.