HighVulnerability

CVE-2026-9130: IBM Langflow OSS authorization bypass in MemoryComponent

Source: NVD(opens in a new tab)
Identifier: CVE-2026-9130
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: 0.3%

Summary

IBM Langflow OSS versions 1.0.0 through 1.10.3 contain an authorization bypass in the MemoryComponent, tracked as CVE-2026-9130. The retrieve_messages and store_message methods filter on session_id without validating flow_id or user_id ownership, letting an authenticated user read other users' chat history via session_id collision through endpoints including /api/v1/run/*, /api/v1/responses, and /api/v2/workflow/*. The flaw affects only multi-user deployments with LANGFLOW_AUTO_LOGIN=False.

Mitigation

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

Details

Scores and exploitation

CVSS score: 7.1(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.3%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

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: Framework
Impact: 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-2026-9130

First tracked: August 6, 2026 at 02:08 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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