# CVE-2026-6588: serge-chat serge Model API Endpoint model.py delete_model missing authentication

> Remote attackers can delete models without authentication due to missing checks in the Model API Endpoint of Serge Chat.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:** 20 Apr 2026
- **Updated:** 20 Apr 2026
- **Also known as:** GHSA-chp8-j7m4-jf28

## What is CVE-2026-6588?

CVE-2026-6588 is a medium-severity missing authorization vulnerability in serge-chat serge, published on 20 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A weakness has been identified in serge-chat serge up to 1.4TB. The impacted element is the function download_model/delete_model of the file api/src/serge/routers/model.py of the component Model API Endpoint. Executing a manipulation can lead to missing authentication. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-6588?


## How do I fix CVE-2026-6588?

No fix has been published for CVE-2026-6588 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-6588 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6588 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-6588 and fix it if it is affected.

What it is: CVE-2026-6588 is a medium-severity missing authorization vulnerability in serge-chat serge, published on 20 Apr 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-2026-6588 exists.

Affected product: serge-chat serge. 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-2026-6588/ (Markdown: https://insights.sbomify.com/CVE-2026-6588/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-6588
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6588
- OSV: https://osv.dev/vulnerability/CVE-2026-6588

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-6588/
Summaries are generated and may contain mistakes; the official description above is the record.