CriticalVulnerability

CVE-2026-7803: IBM Langflow OSS arbitrary code execution through flow node validation

Source: NVD(opens in a new tab)
Identifier: CVE-2026-7803
Published: June 30, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.6%

Summary

CVE-2026-7803 affects IBM Langflow OSS versions 1.0.0 through 1.10.0. Improper validation of flow nodes that have missing or empty component type fields could allow arbitrary code execution. The weakness is classified as CWE-20, Improper Input Validation, and NVD had not yet provided an assessment when the entry was published on 06/30/2026.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 9.8(critical)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: 0.6%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 13, 2026.
Disclosure date: June 30, 2026

Weaknesses and techniques

Weakness (CWE): CWE-20

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Framework
Impact: Integrity,
Confidentiality,
Availability
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-7803

First tracked: June 30, 2026 at 08:09 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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