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Attackers using Langflow flaw for credential harvesting (CVE-2026-55255)

Published

9 July 2026

Topic

technology

Sectors

AI InfrastructureData InfrastructureCybersecurity

Geography

United States

Source

Read at helpnetsecurity.com

Verified

Fusion42 · 9 July 2026 · Fusion42 review

CISA added CVE-2026-55255, an IDOR vulnerability in Langflow's /api/v1/responses endpoint, to its Known Exploited Vulnerabilities catalog after active exploitation in the wild. Attackers chain this flaw with RCE CVE-2026-33017 to harvest embedded API keys, LLM credentials, and secrets from multi-tenant SaaS deployments.

This Wire brief sits within Fusion42's coverage of AI Infrastructure, Data Infrastructure and Cybersecurity.

◆ The Wire takeaway

AI workflow platforms embedding credentials face active exploits; founders building on Langflow or similar LLM stacks must patch immediately and audit multi-tenant isolation to avoid cascading secret theft.

Coverage

1 source · 9 Jul 2026

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Topics

AI InfrastructureData InfrastructureCybersecuritylangflow-idorcredential-harvestingmulti-tenant-isolationsaas-securitycisa-mandate