IBM Langflow OSS Uncontrolled Resource Consumption Denial-of-Service (CVE-2026-7528)

IBM Langflow OSS versions 1.0.0 through 1.9.0 are susceptible to a denial-of-service (DoS) vulnerability identified as CVE-2026-7528. This flaw arises from uncontrolled resource consumption, potentially allowing an attacker to exhaust system resources and render the application unavailable. Successful exploitation requires a low privileged account. Defenders should apply the latest available patches or mitigations to prevent potential exploitation of this vulnerability.

Attack Chain

1. Attacker authenticates to the Langflow OSS application with a low-privileged account.
2. The attacker crafts a specific request to an endpoint that is vulnerable to uncontrolled resource consumption.
3. The application processes the malicious request without proper resource limits.
4. The server begins allocating excessive memory or CPU resources to handle the request.
5. The application’s performance degrades significantly due to resource exhaustion.
6. The system becomes unresponsive, leading to a denial-of-service condition.
7. Legitimate users are unable to access or utilize the Langflow OSS application.

Impact

Successful exploitation of this vulnerability can lead to a complete denial of service, rendering the IBM Langflow OSS application unusable. This can disrupt critical workflows, impact productivity, and potentially lead to data unavailability. The vulnerability affects versions 1.0.0 through 1.9.0.

Recommendation

• Upgrade to a patched version of IBM Langflow OSS that addresses CVE-2026-7528 to remediate the uncontrolled resource consumption vulnerability.
• Monitor network traffic for suspicious requests targeting Langflow OSS endpoints to detect potential exploitation attempts.
• Implement resource limits and rate limiting on Langflow OSS to mitigate the impact of uncontrolled resource consumption, and deploy the detection rules below.