[NEW] [high] Langflow OSS: Multiple Vulnerabilities

highpublic exploitCVE-2026-18729 CVE-2026-19286 CVE-2026-19295

An attacker can exploit multiple vulnerabilities in Langflow OSS to execute arbitrary code and execute arbitrary code with administrator privileges.

CSIRTS triage

vendor: Langflow product: Langflow OSS Remote code execution Privilege escalation

What: Multiple vulnerabilities enable arbitrary code execution and privilege escalation to administrator level.
Who is affected: All deployments of Langflow OSS are affected, with direct remote access or authenticated paths depending on vulnerability.
Urgency: High severity due to unauthenticated or low-privilege code execution and administrator escalation; immediate patching required.
Action: Upgrade Langflow OSS to a patched version addressing CVE-2026-18729, CVE-2026-19286, and CVE-2026-19295.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-31
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2995

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-18729	coverage & exploitation status	NVD · CVE.org
CVE-2026-19286	coverage & exploitation status	NVD · CVE.org
CVE-2026-19295	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Langflow OSS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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mediumCVE-2026-17627: IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain se…nvd · 2026-09-04
mediumCVE-2026-17622: IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain se…nvd · 2026-09-04
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mediumCVE-2026-14470: IBM Langflow OSS 1.0.0 through 1.10.2 could allow an authenticated attacker to traverse direct…nvd · 2026-09-04