bleeping-computer Jul 8, 2026 · Crawled Jul 8, 2026

CISA orders feds to prioritize patching Langflow auth bypass flaw

3 CVEs

AI Summary

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has mandated federal agencies to urgently patch CVE-2026-55255, an authentication bypass vulnerability in the Langflow AI development platform. This flaw allows authenticated attackers to access other users' workflows by manipulating the /api/v1/responses endpoint with a victim's flow_id, enabling data theft and resource abuse. Exploitation in the wild has been observed since June 25, with attackers pursuing financial gain through compute resource hijacking and credential theft. CISA has also added related Langflow vulnerabilities to its Known Exploited Vulnerabilities catalog, including CVE-2025-3248 and CVE-2026-33017, exploited by ransomware actors.

AI-extracted · verify before operational use

Extracted Entities 3 found

CVE CVE-2026-55255 → CVE CVE-2025-3248 → CVE CVE-2026-33017 →

MITRE ATT&CK TTPs 38 techniques

T1027 Obfuscated Files or Information · Defense Evasion T1055 Process Injection · Defense Evasion T1059 Command and Scripting Interpreter · Execution T1059.003 Windows Command Shell · Execution T1068 Exploitation for Privilege Escalation · Privilege Escalation T1071.001 Web Protocols · Command And Control T1078 Valid Accounts · Defense Evasion T1082 System Information Discovery · Discovery T1083 File and Directory Discovery · Discovery T1105 Ingress Tool Transfer · Command And Control T1195.001 Compromise Software Dependencies and Development Tools · Initial Access T1210 Exploitation of Remote Services · Lateral Movement T1486 Data Encrypted for Impact · Impact T1499 Endpoint Denial of Service · Impact T1552 Unsecured Credentials · Credential Access T1619 Cloud Storage Object Discovery · Discovery T1021 Remote Services · Lateral Movement T1053.003 Cron · Execution T1059.001 PowerShell · Execution T1059.004 Unix Shell · Execution T1070.001 Clear Windows Event Logs · Defense Evasion T1075 T1075 T1133 External Remote Services · Persistence T1190 Exploit Public-Facing Application · Initial Access T1485 Data Destruction · Impact T1490 Inhibit System Recovery · Impact T1505.003 Web Shell · Persistence T1046 Network Service Discovery · Discovery T1090 Proxy · Command And Control T1203 Exploitation for Client Execution · Execution T1566 Phishing · Initial Access T1583 Acquire Infrastructure · Resource Development T1584 Compromise Infrastructure · Resource Development T1585 Establish Accounts · Resource Development T1586 Compromise Accounts · Resource Development T1587 Develop Capabilities · Resource Development T1588 Obtain Capabilities · Resource Development T1588.001 Malware · Resource Development