# CVE-2026-22688: WeKnora has Command Injection in MCP stdio test

> Authenticated users can inject commands into MCP stdio settings to execute arbitrary subprocesses on the WeKnora server.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Jan 2026
- **Updated:** 12 Jan 2026
- **Also known as:** GHSA-78h3-63c4-5fqc, GO-2026-4292

## What is CVE-2026-22688?

CVE-2026-22688 is a critical command injection vulnerability in Tencent WeKnora, published on 10 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.5, there is a command injection vulnerability that allows authenticated users to inject stdio_config.command/args into MCP stdio settings, causing the server to execute subprocesses using these injected values. This issue has been patched in version 0.2.5.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-22688?

3 open source packages ship an affected version, including github.com/Tencent/WeKnora. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/Tencent/WeKnora` | Go | All versions | 0.2.5 |
| `github.com/Tencent/WeKnora` | Go | All versions | 0.2.5 |
| `github.com/Tencent/WeKnora` | Go | All versions | 0.2.5 |

Products: Tencent Weknora.

## How do I fix CVE-2026-22688?

Upgrade github.com/Tencent/WeKnora to 0.2.5 or later.

## Is CVE-2026-22688 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22688 exists.

## Other vulnerabilities in Tencent WeKnora

- [CVE-2026-30860](https://insights.sbomify.com/CVE-2026-30860/): WeKnora: Remote Code Execution via SQL Injection Bypass in AI Database Query Tool (critical 10.0)
- [CVE-2026-30861](https://insights.sbomify.com/CVE-2026-30861/): WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation (critical 10.0)
- [CVE-2026-30855](https://insights.sbomify.com/CVE-2026-30855/): WeKnora: Broken Access Control in Tenant Management (high 8.8)
- [CVE-2025-11046](https://insights.sbomify.com/CVE-2025-11046/): Tencent WeKnora test testEmbeddingModel server-side request forgery (medium 6.9)
- [CVE-2026-30858](https://insights.sbomify.com/CVE-2026-30858/): WeKnora: DNS Rebinding Vulnerability in web_fetch Tool Allows SSRF to Internal Resources (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22688 and fix it if it is affected.

What it is: CVE-2026-22688 is a critical command injection vulnerability in Tencent WeKnora, published on 10 Jan 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-2026-22688 exists.

Affected packages and fixed versions:
- github.com/Tencent/WeKnora (Go): affected all versions; fixed in 0.2.5
- github.com/Tencent/WeKnora (Go): affected all versions; fixed in 0.2.5
- github.com/Tencent/WeKnora (Go): affected all versions; fixed in 0.2.5

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-2026-22688/ (Markdown: https://insights.sbomify.com/CVE-2026-22688/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22688
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22688
- OSV: https://osv.dev/vulnerability/CVE-2026-22688

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22688/
Summaries are generated and may contain mistakes; the official description above is the record.