🛡 CVE-2026-55255
Langflow Authorization Bypass Through User-Controlled Key Vulnerability
Langflow Langflow CWE-639
Ransomware use
—
CISA KEV
EPSS
29.1%
Elevated · 98th pct
Added to KEV
2026-07-07
CISA
Remediate by
2026-07-10
⚠ OVERDUE
CWE
CWE-639
weakness
📈 EPSS exploit probability
29.1%
FIRST EPSS — 30-day probability of exploitation in the wild · band Elevated · higher than 98% of all scored CVEs
⚠ KEV remediation overdue
CISA required federal remediation by 2026-07-10. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.
📄 Description
Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request.
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