CVE-2026-9198
Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
KEVCRITICAL 9.8EPSS 28.7%
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
- IBM · Langflow OSS
- CVSS v3.1 IBM
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 28.66% chance of exploitation in the next 30 days, 98th percentile
- CISA KEV
- added 2026-08-04
- Nuclei
- critical · CWE-94
- Published
- 2026-07-17
- Updated
- 2026-08-17
Proof-of-concept exploits (8)
- 0xgh057r3c0n/CVE-2026-91983★ · 2026-07-24
- ywh-jfellus/CVE-2026-91980★ · 2026-07-24
- CuteeCat/CVE-2026-91980★ · 2026-08-11
- Procjevt/CVE-2026-91980★ · 2026-08-10
- rmhowe425/PoC-CVE-2026-91981★ · 2026-09-02
- joaovicdev/EXPLOIT-CVE-2026-91980★ · 2026-08-29
- 0xdak/CVE-2026-9198_exploit1★ · 2026-07-21
- chessalekin/cve-2026-9198_exploit0★ · 2026-08-24