# CVE-2026-0768: Langflow code Code Injection Remote Code Execution Vulnerability

- Exploited (CISA KEV): no
- Published: 2026-01-23
- CVSS: 9.8 CRITICAL (v3.0)
- EPSS: 28.1% (98th percentile)
- CWE: CWE-94

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-09-16 | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2026-09-16 · updated · rule 200204017
  > Updated: signature 200204017 "Langflow Code Injection" (Server Side Code Injection, risk High), systems: Python. References: CVE-2025-3248, CVE-2026-9198, CVE-2026-0768.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2026-10-21 · updated · rule 200204017
  > Updated: signature 200204017 "Langflow Code Injection" (Server Side Code Injection, risk High), systems: Python. References: CVE-2025-3248, CVE-2026-9198, CVE-2026-0768, CVE-2026-93674.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: blocked (1 of 1 requests blocked), template CVE-2026-0768, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: blocked (1 of 1 requests blocked), template CVE-2026-0768, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-0768 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-0768