Vulnary
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Critical· 9.8

CVE-2026-9198

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain two unauthenticated API endpoints that can be chained to achieve remote code execution. The /api/v1/auto_login endpoint issues a SUPERUSER token to any network caller, and the /api/v1/validate/code endpoint executes user‑supplied code via Python's exec() function. An attacker who can reach the service can obtain full control of the affected system.

publishedJul 17, 2026
last modifiedJul 24, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
2%
77th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 1, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

Users of IBM Langflow OSS versions 1.0.0 through 1.10.0.

02

Real-world impact

Full remote code execution with SUPERUSER privileges, allowing complete compromise of the host.

03

Why this severity

CVSS base score 9.8 (Critical) due to network‑adjacent, low‑complexity attack requiring no privileges or user interaction, with high impact on confidentiality, integrity, and availability.

04

What to do about it

no official fix yet
recommended steps
  1. 01No official fix is available in the provided sources.
interim mitigations
  • ›Restrict network access to the Langflow service to trusted hosts.
  • ›Disable or block the /api/v1/auto_login and /api/v1/validate/code endpoints if not required.
  • ›Monitor for unusual authentication or code execution attempts.

Remediation guidance is based on general best practices; no vendor patch is referenced in the supplied data.

05

Timeline

  1. Jul 17, 2026 · 16d ago
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 24, 2026 · 9d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →