What it is
CVE-2026-0769 is an unauthenticated vulnerability affecting Langflow. Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute...
Vulnerability report
Active exploitation observed
Confirmed confidence
Not in CISA KEV
CVE-2026-0769
Langflow Remote Code Execution
Langflow · 1.3.2
- Severity
- CVSS 9.8 · Critical
- Confidence
- Confirmed
- Exploit status
- Observed in sensors
- EPSS
- 41.7%
- First observed
- 27 Aug 2026
- Last observed
- 10 Oct 2026
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. Previdian sensors observed exploitation attempts with confirmed confidence.
Who is affected?
Langflow 1.3.2.
What should we do?
Patch immediately, validate internet-facing exposure, and monitor for matching requests.
Overview
Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability
Langflow eval_custom_component_code Eval 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 implementation of eval_custom_component_code function. 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 the current process. Was ZDI-CAN-26972.
Vendor
Product
Affected
Status
Langflow
Affected
Langflow
1.3.2
Affected
- Published
- 23 Jan 2026
- Exploitation Reported
- 27 Aug 2026
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- None
- User interaction
- None
Tags
python
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-0769
- ZDI-26-035 zerodayinitiative.com · CVE Record https://www.zerodayinitiative.com/advisories/ZDI-26-035/
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
Previdian
Previdian independently recorded this as exploited after first seeing it in honeypot sensors.
Active exploitation observed
Previdian sensor
Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.
Proof of concept available
GitHub
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 |
|---|---|
| Previdian Sensors First | 2026-09-18 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.
762
Attempts observed
55
Unique attacker IPs
25
Attacker countries
AZ · BR · DE · DK · FR · HK · ID · IN · JP · KH · KR · LT · MX · NL · PK · RS · RU · SA · SG · TH · TR · TW · US · VN · XK
1
Sensors observed
CVE-2026-0769 exploitation attempts over the last 47 days
Daily events observed by Previdian sensors
Updated 11 Oct 2026
26 Aug
5 Sep
15 Sep
25 Sep
11 Oct
First observed 27 Aug 2026 · Last observed 10 Oct 2026
Pro adds sensor region and window summaries. Enterprise adds raw IPs, paths, User-Agents, and payloads.
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
- 2
- 16
- 3
Request targets and User-Agents available in Pro. Callback host details available in Enterprise.
Scanner coverage
No scanner integrations recorded yet.
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 accessRisk 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
41.7%
Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
rmhowe425/POC-CVE-2026-0769
github · Created 2026-09-02 23:34:00 UTC · 0 stars · AI assessment 90%
Timeline
From disclosure to observed exploitation
-
23:34 UTC
Public PoC available
Public proof-of-concept code published
-
23:58 UTC
Indicators of compromise added (55)
Indicators of compromise recorded
-
23:58 UTC
Observed by Previdian sensors
Evidence-backed exploitation signal
-
03:28 UTC
CVE published
Vulnerability disclosed publicly
-
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.
- 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-2026-0769
Free JSON includes basic KEV fields{
"cve_id": "CVE-2026-0769",
"confidence": "Confirmed",
"cvss_score": 9.8,
"cvss_estimated": false,
"epss_score": 0.41695,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": true
},
"sensor_telemetry": { "attempts": 762, "sensors": 1 }
}