CVE-2026-6618 langgenius CVE debrief

Who should care

Defenders responsible for langgenius dify deployments should assess exposure and prioritize verification and potential patching or mitigation. This includes reviewing system configurations, checking for affected versions, and applying patches or mitigations provided by the vendor. Additionally, defenders should monitor the system for potential unauthorized requests and implement compensating controls for exposed systems while remediation is scheduled and

Why it matters

Defenders should care about CVE-2026-6618 because it affects langgenius dify deployments, potentially allowing unauthorized requests. Verification of affected versions and patching or mitigation are necessary to prevent potential data breaches or system compromise.

• Potential unauthorized requests to internal or external resources.
• Possible data breaches or system compromise.
• Required verification of affected versions and potential patching or mitigation.
• Potential impact on system availability or integrity.

Technical summary

The vulnerability affects the langgenius dify component ApiBasedToolSchemaParser, allowing remote attackers to manipulate the url argument in the parse_openai_plugin_json_to_tool_bundle function, potentially leading to unauthorized requests. This issue arises from inadequate validation of the url argument, which could enable attackers to bypass security checks and make requests to internal or external resources. Defenders should be aware of the potential for data breaches or system compromise if the vulnerability is exploited. The exploit has been published, and although the vendor was notified, no response was received. To mitigate this vulnerability, defenders should prioritize verifying the affected versions

Defensive priority

Defenders should prioritize verifying the affected versions and applying patches or mitigations to prevent potential unauthorized requests.

Recommended defensive actions

• Verify the version of langgenius dify and check if it is within the affected range (up to 1.13.3).
• Apply patches or mitigations provided by the vendor, if available.
• Monitor the system for potential unauthorized requests.
• Restrict access to the ApiBasedToolSchemaParser component, if possible.
• Perform vulnerability scanning to identify potential exposure.
• Review system logs for suspicious activity related to the ApiBasedToolSchemaParser component.
• Implement additional security measures, such as web application firewalls, to detect and prevent potential attacks.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the vendor's response and potential patches or mitigations are unknown.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.