# CVE-2026-58580: LobeChat 2.2.9 - Broken Object-Level Authorization in Message Sub-Resource Writes

> Authenticated users can modify or read other users' message metadata and content by exploiting missing user ID checks in message update methods.

- **Severity:** Medium 6.0 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **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:** 2 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-vc6m-gvqm-4jf2

## What is CVE-2026-58580?

CVE-2026-58580 is a medium-severity missing authorization vulnerability in lobehub, published on 2 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

LobeChat through 2.2.9 server-database deployments are vulnerable to broken object-level authorization in MessageModel. The updateMessagePlugin, updatePluginState, updatePluginError, updateTTS and updateTranslate methods filter target rows by message id alone, omitting the userId scope that sibling methods apply, and findMessagePlugin reads back by id alone. Reachable via the corresponding tRPC message procedures, an authenticated user who knows another user's message identifier can overwrite that victim's plugin tool-call metadata, plugin state/error, text-to-speech and translation records on the same instance, and the tampered content is served back to the victim. Exploitation requires knowledge of the victim's non-enumerable message identifier.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-58580?


## How do I fix CVE-2026-58580?

No fix has been published for CVE-2026-58580 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-58580 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58580 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-58580 and fix it if it is affected.

What it is: CVE-2026-58580 is a medium-severity missing authorization vulnerability in lobehub, published on 2 Jul 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-2026-58580 exists.

Affected product: lobehub. 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-2026-58580/ (Markdown: https://insights.sbomify.com/CVE-2026-58580/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-58580
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-58580
- OSV: https://osv.dev/vulnerability/CVE-2026-58580

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-58580/
Summaries are generated and may contain mistakes; the official description above is the record.