RCE in Tencent Weknora
CVE-2026-22688
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (80.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.019 · change: -0.000
Affected products
- Tencent Weknora — versions < 0.2.5
Weakness classification (CWE)
References
- github.com/Tencent/WeKnora/security/advisories/GHSA-78h3-63c4-5fqc (Exploit, Vendor Advisory)
- github.com/Tencent/WeKnora/commit/f7900a5e9a18c99d25cec9589ead9e4e59ce04bb (Patch)
Frequently asked questions
- What is CVE-2026-22688?
- CVE-2026-22688 is a critical-severity vulnerability in Tencent Weknora, classified under Command Injection. CVSS score: 9.9/10. Published 2026-01-10.
- How severe is CVE-2026-22688?
- Critical severity. CVSS v3 base score is 9.9 out of 10.