Is CVE-2026-9198 actively exploited?

Yes. Previdian has observed exploitation attempts targeting this CVE. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian sensors have observed 467 exploitation attempts, 314 unique attacker IPs, and 51 countries targeting CVE-2026-9198. First observed Jul 06, 2026; last observed Sep 11, 2026.

Which versions are affected?

CVE-2026-9198 affects IBM Langflow OSS. Reported affected version: 1.0.0 to <= 1.10.0.

How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.

Yes. CVE-2026-9198 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2026-9198

Q: How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.

Q: Is it in CISA KEV?

Yes. CVE-2026-9198 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Langflow OSS Unauthenticated Remote Code Execution

IBM / Langflow OSS · 1.0.0 to <= 1.10.0

View live feed Monitor via API Watch CVE-2026-9198

Severity: CVSS 9.8 · Critical
Confidence: Confirmed
Exploit status: Observed in sensors
EPSS: 60.6%
First observed: 06 Jul 2026
Last observed: 11 Sep 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-9198 is an unauthenticated vulnerability affecting IBM Langflow OSS. 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...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

IBM / Langflow OSS 1.0.0 to <= 1.10.0.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Langflow OSS Unauthenticated Remote Code Execution

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

Vendor Product Affected Status

IBM Langflow OSS Through 1.10.0 Affected

View vendor advisory

Published: 17 Jul 2026
Exploited Since: 06 Jul 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-9198
Vendor Advisory — ibm.com ibm.com · Vendor Advisory https://www.ibm.com/support/pages/node/7278927

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 04 Aug 2026

Previdian independently recorded this as exploited after first seeing it in honeypot sensors.

Active exploitation observed

Previdian sensor

First observed 06 Jul 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Proof of concept available

GitHub

Recorded 21 Jul 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
CISA First	2026-08-04 16:45 UTC
Previdian	2026-08-04 18:01 UTC
CVE	2026-08-04 18:20 UTC
TheHackerNews	2026-08-05 07:40 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

467

Attempts observed

314

Unique attacker IPs

Attacker countries

AE · AU · BD · BG · BR · CA · CH · CN · CZ · DE · DK · DO · EC · EE · EG · ER · ES · ET · FI · FR · GB · GH · HK · ID · IN · IQ · IR · IT · JP · KE · KH · KR · MA · MD · MY · NG · NL · PK · PL · PT · RS · RU · SA · SC · SE · SG · TH · TR · TW · US · VN

Sensors observed

CVE-2026-9198 exploitation attempts over the last 69 days

Daily events observed by Previdian sensors

Updated 11 Sep 2026

5 Jul 19 Jul 2 Aug 16 Aug 11 Sep

First observed 06 Jul 2026 · Last observed 11 Sep 2026

Pro adds sensor region and window summaries. Enterprise adds raw IPs, paths, User-Agents, and payloads.

Request telemetry access

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts: 10; 172; 0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

Nuclei template detected 29 Jul 2026.

View Nuclei template

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-9198.yaml	29 Jul 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

60.6%

Weaknesses

Improper Control of Generation of Code ('Code Injection') CWE-94

Recent mention · RecordedFuture

August 2026 CVE Landscape

In August 2026, Insikt Group® identified 73 high-impact vulnerabilities that should be prioritized for remediation, 43 of which had a Very Critical Recorded Future Risk Score. This represents a 14% decrease from last month.

Read full advisory

All Mentions

Recent mention · RecordedFuture

August 2026 CVE Landscape

RecordedFuture · 08 Sep 2026

Recent mention · TheHackerNews

CISA Flags Langflow RCE, Tomcat, and N-central Flaws as Actively Exploited

TheHackerNews · 05 Aug 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on August 5, 2026, added three flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. The list of vulnerabilities is as follows - CVE-2026-9198 (CVSS score: 9.8) - A code injection vulnerability in Langflow that allows unauthenticated attackers to achieve full remote

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

joaovicdev/EXPLOIT-CVE-2026-9198

github · Created 2026-08-29 23:37:33 UTC · 0 stars · AI assessment 90%

K3ysTr0K3R/CVE-2026-9198

github · Created 2026-08-22 15:55:09 UTC · 0 stars · AI assessment 90%

CVE-2026-9198 - IBM Langflow OSS Unauthenticated Remote Code Execution (RCE)

CuteeCat/CVE-2026-9198

github · Created 2026-08-11 00:55:44 UTC · 0 stars · AI assessment 85%

CVE-2026-9198利用代码

rmhowe425/PoC-CVE-2026-9198

github · Created 2026-08-05 17:44:08 UTC · 1 stars · AI assessment 90%

IBM Langflow - Remote Code Execution

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

05 Aug 2026
KEV confirmed by TheHackerNews

Exploitation attested by an external source
04 Aug 2026
KEV confirmed by CVE

Exploitation attested by an external source
04 Aug 2026
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
29 Jul 2026
Public PoC available

Public proof-of-concept code published
29 Jul 2026
Nuclei template available

Scanner coverage available
17 Jul 2026
CVE published

Vulnerability disclosed publicly
06 Jul 2026
Indicators of compromise added (599)

Indicators of compromise recorded
06 Jul 2026
Observed by Previdian sensors

Evidence-backed exploitation signal
21 May 2026
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-9198

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-9198",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.60597,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 467, "sensors": 25 }
}

CVE-2026-9198

Langflow OSS Unauthenticated Remote Code Execution

Tags

CVE References

Exploited in the wild

Active exploitation observed

Proof of concept available

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Attacker IP Indicators

Scanner Artifacts

Weaknesses

August 2026 CVE Landscape

All Mentions

Potential Proof of Concepts

KEV confirmed by TheHackerNews

KEV confirmed by CVE

Added to CISA KEV

Public PoC available

Nuclei template available

CVE published

Indicators of compromise added (599)

Observed by Previdian sensors

CVE ID reserved

Automate this intelligence