- Critical 9.8
- Known exploited (CISA KEV)
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 (executes user code via exec()) to achieve full RCE on default Langflow deployments
Scores
The facts
- Published
- 17 July 2026
- Last changed
- 17 August 2026
- NVD status
- Analyzed
- Severity
- Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- Affects
- langflow langflow
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 4 August 2026.
- EPSS
- 28.7% chance of exploitation activity in the next 30 days (percentile 98).
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