CVE-2025-3248CRITICAL 9.8CISA KEVEPSS p100.0%

CVE-2025-3248Langflow Missing Authentication Vulnerability

Langflow / Langflow

Description

Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS99.96% probability of exploitation · percentile 100.0% · 2026-06-15T12:03:41Z
Published2025-04-07
Last modified2025-11-06

CISA KEV entry

Added to KEV: 2025-05-05

Underlying weaknesses· 2

CWE-306CWE-94

References

  1. https://github.com/langflow-ai/langflow/pull/6911
  2. https://github.com/langflow-ai/langflow/releases/tag/1.3.0
  3. https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/
  4. https://www.vulncheck.com/advisories/langflow-unauthenticated-rce
  5. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248

2

TypeTargetConfidenceTier
WeaknessMissing Authentication for Critical Functioncwe-3060%live
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

(incoming)1

TypeTargetConfidenceTier
KEVEntryLangflow Missing Authentication Vulnerabilitykev-cve-2025-32480%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Langflow Code Injection Vulnerability
CVE
Langflow Origin Validation Error Vulnerability
CVE
CVE-2026-21445
CVE
CVE-2026-0768
CVE
CVE-2026-34046
CVE
CVE-2026-0769
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.