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Fencer Intel
critical 9.8

CVE-2026-9198 kev in the critical feed json

Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation

published 3mo ago modified 18d ago also EUVD-2026-45236

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2026-08-04
epss
28.7%
EPSS 28.7% chance of exploitation in 30 days, percentile 98%
public exploits
2
Metasploit and Exploit-DB

Summary

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

Patch / fix

cisa required action Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

  • langflow langflow 1.10.1

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Timeline

  1. CISA SSVC: exploitation active
  2. First public exploit (Metasploit exploit/multi/http/langflow_unauth_rce_cve_2026_9198)
  3. Published
  4. Added to CISA KEV
  5. CISA patch deadline

Known exploited

Added
3mo ago
Patch by
2026-08-07 (3mo ago)
Ransomware
Not known
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor, product
IBM, Langflow
CISA name
IBM Langflow Code Injection Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
3mo ago

Exploit prediction

28.66% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • IBM Langflow OSS

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.