CVE-2026-9198: IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (execut

criticalpublic exploitCVSS 9.8CVE-2026-9198

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments

Details

Source: NVD Recent CVEs (US · database · site)
Severity: critical — CVSS 9.8
Published: 2026-07-17
Last updated: 2026-07-18
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-9198

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Moderate exploitation riskCVE-2026-91981.9% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 77% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-9198	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownNCSC-2026-0251 [1.00] [M/H] Vulnerabilities fixed in IBM Langflow OSSncsc-nl
high[NEW] [high] IBM Langflow Desktop OSS: Multiple vulnerabilitiescert-bund

CVE-2026-9198: IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (execut

Details

Exploitation outlook

Referenced CVEs

Same CVEs, other sources

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