Vulnerability report

Active exploitation observed Confirmed confidence Not in CISA KEV

CVE-2026-0768

Langflow code Injection Remote Code Execution Vulnerability

Langflow · 1.4.2

Watch CVE-2026-0768 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
23.2%
First observed
14 Jul 2026
Last observed
17 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-0768 is an unauthenticated Langflow code Injection Remote Code Execution Vulnerability. Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute...

Is it exploited?

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

Who is affected?

Langflow 1.4.2.

What should we do?

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

Overview

Langflow code Code Injection Remote Code Execution Vulnerability

Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the code parameter provided to the validate endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-27322.

Langflow Affected
Langflow
1.4.2
Published
23 Jan 2026
Exploited Since
14 Jul 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

python nuclei_scanner

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-0768
  • ZDI-26-034 zerodayinitiative.com · CVE Record https://www.zerodayinitiative.com/advisories/ZDI-26-034/

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

VulnCheck

Recorded 29 Aug 2026

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

Active exploitation observed

Previdian sensor

First observed 04 Aug 2026

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

Proof of concept available

GitHub

Recorded 01 Sep 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
VulnCheck First 2026-08-29 21:06 UTC
BleepingComputer 2026-09-01 17:54 UTC
Dark Reading 2026-09-01 20:48 UTC
Previdian Sensors 2026-09-03 09:38 UTC
The Hacker News 2026-10-15 09:32 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.

4,844

Attempts observed

779

Unique attacker IPs

51

Attacker countries

AE · AR · AU · AZ · BD · BE · BG · BR · CA · CH · CN · CZ · DE · DK · DZ · EG · ER · ES · FR · GB · HK · ID · IN · IS · IT · JP · KH · KR · KZ · LT · MA · MX · MY · NL · PH · PK · RO · RU · SA · SC · SE · SG · TH · TR · TW · UA · US · VN · XK · YE · ZA

51

Sensors observed

CVE-2026-0768 exploitation attempts over the last 91 days

Daily events observed by Previdian sensors

Updated 17 Oct 2026

5
4
1
8
14
0
6
2
2
1
1
1
2
0
0
1
58
140
70
2
10
14
25
33
21
3
4
6
17
36
16
16
42
20
2
1
4
6
14
4
72
92
114
8
10
110
48
18
4
7
10
11
5
19
14
23
57
13
21
35
127
89
102
116
112
24
35
51
48
19
29
8
38
336
178
56
138
32
25
12
13
17
8
29
5
41
68
99
102
1,346
238
19 Jul 7 Aug 26 Aug 14 Sep 17 Oct

First observed 14 Jul 2026 · Last observed 17 Oct 2026

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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
3
174
51

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

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

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-2026-0768.yaml 16 Sep 2026

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.0

9.8 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

23.2%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

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

Recent mention · The Hacker News

Langflow's Critical Authenticated RCE Flaw Targeted in 1,423 Honeypot Exploit Attempts

Ravie LakshmananOct 15, 2026Vulnerability / Artificial Intelligence Threat actors are exploiting a critical security flaw in Langflow, according to an alert from Previdian. Langflow is an open-source platform that allows developers to build artificial intelligence (AI)...

Read full advisory

All Mentions

Recent mention · The Hacker News

Langflow's Critical Authenticated RCE Flaw Targeted in 1,423 Honeypot Exploit Attempts

The Hacker News · 15 Oct 2026

Ravie LakshmananOct 15, 2026Vulnerability / Artificial Intelligence Threat actors are exploiting a critical security flaw in Langflow, according to an alert from Previdian. Langflow is an open-source platform that allows developers to build artificial intelligence (AI) applications and agentic workflows. In February 2025, DataStax, the parent company of Langflow, was acquired by IBM. The vulnerability in question is CVE-2026-105740 (CVSS score: 9.9), a case of authenticated remote code execution impacting versions prior to 1.9.0. "Any authenticated Langflow user can achieve Remote Code...

Recent mention · Dark Reading

Critical Langflow Flaw Exploited as Attacks on AI Platform Rise

Dark Reading · 01 Sep 2026

The attacks targeting CVE-2026-0768 are the latest threat against the low-code AI development platform, which is receiving more attention from adversaries this year.

Recent mention · Dark Reading

Critical Langflow Vulnerability Exploited as Attacks on AI Platform Rise

Dark Reading · 01 Sep 2026

The attacks targeting CVE-2026-0768 are the latest threat against the low-code AI development platform, which is receiving more attention from adversaries this year.

Recent mention · BleepingComputer

Critical Langflow flaw exploited to steal OpenAI and AWS keys

BleepingComputer · 01 Sep 2026

Threat actors are exploiting an unauthenticated remote code execution vulnerability (CVE-2026-0768) in Langflow, an open-source framework for building AI applications, to steal credentials, tokens, and keys. [...]

Recent mention · The Hacker News

Attackers Exploit Critical Langflow and Rails Flaws in Credential-Probing and C2 Activity

The Hacker News · 01 Sep 2026

Threat actors are exploiting two critical flaws impacting Langflow and Ruby on Rails, according to new findings from VulnCheck. The vulnerabilities in question are listed below - CVE-2026-0768 (CVSS score: 9.8) - A lack of proper validation of a user-supplied input vulnerability that could be exploited to execute arbitrary Python code in the context of the root user. CVE-2026-66066 aka

Potential Proof of Concepts

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

rmhowe425/POC-CVE-2026-0768

github · Created 2026-09-02 20:46:12 UTC · 0 stars · AI assessment 90%

Langflow contains an unauthenticated remote code execution vulnerability in the validate endpoint that can lead to arbitrary Python code execution as root.

pruva · Created 2026-09-02 03:58:14 UTC

Severity: CRITICAL | CVE: CVE-2026-0768 | Package: langflow-ai/langflow

HORKimhab/CVE-2026-0768

github · Created 2026-09-01 08:01:23 UTC · 0 stars · AI assessment 90%

CVE-2026-0768 - Draft or TODO

Langflow <=1.2.x - Unauthenticated Remote Code Execution via validate_code

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 09:32 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  2. 11:35 UTC

    Virtual patch available

    Compensating WAF rule available to block exploitation

  3. 04:30 UTC

    Nuclei template available

    Scanner coverage available

  4. 20:48 UTC

    KEV confirmed by Dark Reading

    Exploitation attested by an external source

  5. 17:54 UTC

    KEV confirmed by BleepingComputer

    Exploitation attested by an external source

  6. 08:01 UTC

    Public PoC available

    Public proof-of-concept code published

  7. 21:06 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  8. 10:28 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  9. 15:39 UTC

    Indicators of compromise added (781)

    Indicators of compromise recorded

  10. 03:28 UTC

    CVE published

    Vulnerability disclosed publicly

  11. 22:50 UTC

    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-2026-0768

Sample API response 
{
  "cve_id": "CVE-2026-0768",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.23227,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 4844, "sensors": 51 }
}