CVE-2026-19297: critical vulnerability in IBM Langflow OSS
Insufficient Authentication Brute Force Protection on Login Endpoint
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.6%
IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
IBM · Langflow OSSRelated CVEs — IBM Langflow OSS
In the same product, most dangerous first.
CVE-2026-9198CRITICALUnauthenticated Remote Code Execution via Auto-Login Bypass and Code ValidationEPSS 28.7%KEVCVE-2026-93674CRITICALLangflow OSS is affected by multiple vulnerabilitiesEPSS 15.3%CVE-2026-7873CRITICALCode Injection Vulnerability in Code Validation EndpointEPSS 6.2%CVE-2026-9103CRITICALUnauthenticated Superuser Token Issuance via Auto-Login EndpointEPSS 3.2%CVE-2026-10134CRITICALUnauthenticated Server-Side RCE via PythonCodeStructuredTool in Public FlowsEPSS 2.3%CVE-2026-93680CRITICALLangflow OSS is affected by multiple vulnerabilitiesEPSS 2.2%