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CVE-2026-0769

Published: Jan 23, 2026Updated: Feb 18, 2026 Sources: CVE List NVDCWE-95
9.8CRITICAL
NVD MITRE
EPSS Score
38.0%
Top 1.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

Description

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.

In plain language

AI Act now

CVE-2026-0769 is a critical flaw in Langflow that can let an attacker run arbitrary code on your server without needing a login; if your Langflow is reachable from the internet, you should act urgently—there’s no known fixed version yet.

Executive summary

CVE-2026-0769 is an unauthenticated code execution flaw in Langflow’s eval_custom_component_code path (CWE-95), where insufficient validation of a user-controlled string lets remote attackers inject and execute Python code in the context of the running Langflow process; it has resurfaced with exploitation reporting, and no patch information is available.

If affected, business impact
Full server takeoverCustomer data theftOperational shutdownRansomware risk

What to do now

  1. Check whether you are running Langflow and whether your Langflow server (UI and any related endpoints) is reachable from the internet.
  2. If it is internet-reachable, immediately restrict access (IP allowlist/VPN-only/firewall rules) so it is not public.
  3. Identify whether you use or expose any functionality related to “custom component” evaluation (eval_custom_component_code) and disable it if you can.
  4. Check with your Langflow vendor/community for a fixed release specifically for CVE-2026-0769; the current patch status is not yet known.
  5. If disabling is not possible, keep Langflow completely off the public network until a fix is released, and ensure any reverse proxy only allows trusted sources.
May need vendor / contractor work

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-95

Affected Products

Langflow
commercialaka langflow-base, langflow desktop
LangflowSaaS
AI / ML / ai-agent-tooling
and 1 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Is your org exposed to CVE-2026-0769?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://www.zerodayinitiative.com/advisories/ZDI-26-035/
zerodayinitiative.com
News mentions
3

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