CVE-2026-30861
CVE-2026-30861 is a critical-severity vulnerability in Tencent Weknora with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.9)
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10184
- Weakness: CWE-78
- Affected product: Tencent Weknora
- Published:
- Last modified:
Description
WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution (RCE) vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user registration, meaning any attacker can create an account and exploit the command injection flaw. Despite implementing a whitelist for allowed commands (npx, uvx) and blacklists for dangerous arguments and environment variables, the validation can be bypassed using the -p flag with npx node. This allows any attacker to execute arbitrary commands with the application's privileges, leading to complete system compromise. This issue has been patched in version 0.2.10.
Frequently asked questions
- What is CVE-2026-30861?
- WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution (RCE) vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user registration, meaning any attacker can create an account and exploit the command injection flaw. Despite implementing a whitelist for allowed commands (npx, uvx) and blacklists for dangerous arguments and environment variables, the validation can be bypassed using the -p flag with npx node. This allows any attacker to execute arbitrary commands with the application's privileges, leading to complete system compromise. This issue has been patched in version 0.2.10.
- How severe is CVE-2026-30861?
- CVE-2026-30861 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-30861 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-30861?
- CVE-2026-30861 affects Tencent Weknora. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-30861?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-30861 have an EU (EUVD) identifier?
- Yes. CVE-2026-30861 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10184.
- When was CVE-2026-30861 published?
- CVE-2026-30861 was published on 2026-03-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*
More vulnerabilities in Tencent Weknora
- CVE-2026-30860 — Critical (CVSS 9.9): WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version…
- CVE-2026-22688 — Critical (CVSS 9.9): WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version…
- CVE-2026-30855 — High (CVSS 8.8): WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version…
- CVE-2025-11046 — High (CVSS 7.3): A security flaw has been discovered in Tencent WeKnora 0.1.0. This impacts the function testEmbeddingModel of the file…
- CVE-2026-30858 — Medium (CVSS 6.5): WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version…
- CVE-2026-8786 — Medium (CVSS 6.3): A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function…
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