CVE-2026-7667 IBM CVE debrief

Who should care

Users of IBM Langflow OSS 1.0.0 through 1.10.0 should be aware of this vulnerability and take steps to mitigate it, especially those responsible for Langflow OSS deployments, vulnerability management, and security teams who need to review their environments for potential exposure and apply patches or compensating controls.

Technical summary

The vulnerability exists in IBM Langflow OSS 1.0.0 through 1.10.0, where an authenticated attacker can create a malicious flow that points to an attacker-controlled URL. This URL returns a specially crafted Content-Disposition header, which enables arbitrary file write operations with attacker-controlled content to any path accessible by the Langflow process. The high CVSS score of 8.8 indicates a significant risk to affected systems, emphasizing the need for immediate and decisive action to protect affected systems and data. Effective mitigation requires a proactive and coordinated approach, involving security teams, system administrators, and other stakeholders to ensure that all necessary steps are taken to address this vulnerability and prevent potential attacks.

Defensive priority

High, given the potential for arbitrary file writes and high CVSS score of 8.8. Immediate action is recommended to mitigate this vulnerability and prevent potential attacks. Users should prioritize patching or applying compensating controls to limit exposure and prevent exploitation attempts that could lead to data breaches or system compromise. Monitoring for suspicious activity and implementing additional security measures can help reduce the risk associated with this vulnerability until a patch can be applied. This vulnerability requires urgent attention from security teams and system administrators responsible for Langflow OSS deployments. The high CVSS score indicates a significant risk to affected systems, making it essential to address this vulnerability promptly and thoroughly. The vulnerability's impact on confidentiality, integrity, and availability underscores the need for swift and effective mitigation strategies. Therefore, assigning a high defensive priority is crucial to ensure timely remediation and minimize potential damage. This priority level reflects the severity of the vulnerability and the potential consequences of exploitation, emphasizing the need for immediate and decisive action to protect affected systems and data. By prioritizing defensive measures, organizations can reduce the likelihood of successful exploitation and minimize the potential impact on their operations and assets. Effective mitigation requires a proactive and coordinated approach, involving security teams, system administrators, and other stakeholders to ensure that all necessary steps are taken to address this vulnerability and prevent potential attacks. The high defensive priority assigned to this vulnerability is consistent with best practices for vulnerability management and reflects the need for urgent attention to this issue. By taking prompt and effective action, organizations can minimize the risk associated with this vulnerability and protect their systems and data from potential exploitation. This vulnerability's high defensive priority highlights the importance of proactive vulnerability management and the need for organizations to stay vigilant in the face.

Recommended defensive actions

• Apply the vendor's official patch or upgrade to a non-affected version.
• Restrict access to the Langflow process and its accessible paths.
• Monitor for suspicious activity and implement compensating controls.
• Perform inventory checks to identify affected systems.
• Exception tracking and retesting should be performed after applying patches.

Evidence notes

The CVE record was published on 2026-07-17T20:17:29.350Z and has not been modified since then. The NVD entry is currently being reviewed. Evidence is limited to CVE and NVD details. Defenders should verify Langflow OSS 1.0.0 through 1.10.0 deployments, review official advisories, and track exceptions.

Official resources