HighVulnerability

CVE-2026-9077: IBM Langflow OSS localhost restriction bypass via remote authenticated access

Source: NVD(opens in a new tab)
Identifier: CVE-2026-9077
Published: August 5, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-9077 affects IBM Langflow OSS versions 1.0.0 through 1.10.3. A remote authenticated attacker can bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system. The weakness is classified as CWE-807, Reliance on Untrusted Inputs in a Security Decision.

Mitigation

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

Details

Scores and exploitation

CVSS score: 8.5(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 9, 2026.
Disclosure date: August 5, 2026

Weaknesses and techniques

Weakness (CWE): CWE-807

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Plugin
Impact: Integrity,
Confidentiality
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-2026-9077

First tracked: August 5, 2026 at 02:07 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Topics

Model Context Protocol

Summary

Mitigation

Topics

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