What is the CVSS score of CVE-2026-30855?

CVE-2026-30855 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2026-30855?

Yes, a public proof-of-concept exploit is available for CVE-2026-30855. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-30855?

Within 24 hours: Identify all WeKnora deployments and assess if they support multiple tenants; disable WeKnora if business-critical and no mitigation available. Within 7 days: Implement network segmentation to restrict WeKnora access to authorized personnel only; enable comprehensive audit logging of tenant operations; notify affected customers of exposure window. Within 30 days: Upgrade to version 0.3.2 or later when available; conduct data access audit to identify unauthorized tenant reads/modifications; consider security assessment of other LLM integrations.

Weknora CVE-2026-30855

HIGH

Improper Access Control (CWE-284)

2026-03-07 security-advisories@github.com

GHSA-ccj6-79j6-cq5q

Authentication Bypass AI / ML Weknora Suse Tencent

8.8

CVSS 3.1 · GitHub Advisory

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Register public account on WeKnora
Delivery

Authenticate as low-privilege user
Exploit

Send crafted request to tenant management endpoint
Execution

Bypass authorization checks
Impact

Access arbitrary tenant data or modify/delete tenants

Vulnerability Assessment

Weakness	CWE CWE-284 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Access control enforcement MITRE ATT&CK 1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	WeKnora version prior to 0.3.2 with open public registration enabled and no authorization validation on tenant management API endpoints. Attacker requires valid authenticated user account (obtainable through public self-registration).
Impact	CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation no authentication required. Public exploit/POC available.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Insufficient authorization checks in WeKnora's tenant management endpoints allow any authenticated user to read, modify, or delete arbitrary tenants, with public exploit code available. Since the application allows open registration, unauthenticated attackers can register an account and exploit this flaw to perform cross-tenant account takeover and data destruction. No patch is currently available for this high-severity vulnerability affecting WeKnora AI/ML framework versions prior to 0.3.2.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

RemediationAI

Fixed in version 0.3.2.. Restrict network access to the affected service where possible.

Affected Packages

go github.com/tencent/weknora fix: 0.3.1, 0.3.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in go

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-284 (Improper Access Control). Affects the tenant management component of Weknora. WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.2, an authorization bypass in tenant management endpoints of WeKnora application allows any authenticated user to read, modify, or delete any tenant by ID. Since account registration is open to the public, this vulnerability allows any unauthenticated attacker to register an account and subsequently exploit the system. This enables cross-tenant account takeover and destructio

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SUSE HIGH

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

PoC Detected

Mar 09, 2026 - 17:33 vuln.today

Public exploit code

CVE Published

Mar 07, 2026 - 17:15 nvd

HIGH 8.8

DescriptionGitHub Advisory

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.2, an authorization bypass in tenant management endpoints of WeKnora application allows any authenticated user to read, modify, or delete any tenant by ID. Since account registration is open to the public, this vulnerability allows any unauthenticated attacker to register an account and subsequently exploit the system. This enables cross-tenant account takeover and destruction, making the impact critical. This issue has been patched in version 0.3.2.

Executive ViewAI

Why It Matters

WeKnora contains a critical authorization flaw allowing any authenticated user to access, modify, or delete tenant data belonging to other organizations. This poses immediate risk to multi-tenant deployments where customer data isolation is compromised, potentially affecting regulatory compliance and customer trust.

Business Impact: Severe

Compensating Controls

Implement IP whitelisting to restrict WeKnora access to specific trusted networks; deploy WAF rules to require multi-factor authentication for tenant management endpoints; disable or restrict tenant management API endpoints if not essential to operations; implement database-level access controls to prevent cross-tenant data access; segment WeKnora application on isolated network from production systems; enable enhanced audit logging and implement real-time alerting for unauthorized tenant access attempts.

Threat Intelligence Overview

EPSS Score

0.1%

Top 70% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.