by Kastro
Paper/Archive/CVE-2026-9198

CVE-2026-9198

IBM Langflow OSS — Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation

KEV · due 7 AugEPSS 29%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
99
CVSS 9.8 (CNA)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 98.1.981 × 2019.6Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Langflow OSS1.0.0 – 1.10.0–CNA

Scores by source

ibm (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

patchibm.com/support/pages/node/7278927refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-9198kevcisa.gov/known-exploited-vulnerabilities-catalog