MediumVulnerability

CVE-2026-56273: Flowise path traversal in Faiss and SimpleStore vector store basePath parameter

Source: NVD(opens in a new tab)
Identifier: CVE-2026-56273
Published: July 8, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.5%

Summary

CVE-2026-56273 affects Flowise before 3.1.0. The Faiss and SimpleStore vector store implementations accept unsanitized basePath parameters from authenticated users, a path traversal flaw (CWE-22). An attacker with a valid API token can write vector store data to arbitrary filesystem locations, which the source says could enable code execution or data exfiltration.

Mitigation

Fixed in 3.1.0. Upgrade Flowise to version 3.1.0 or later.

Details

Scores and exploitation

CVSS score: 6.5(medium)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.5%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 14, 2026.
Disclosure date: July 8, 2026

Weaknesses and techniques

Weakness (CWE): CWE-22
Attack pattern (CAPEC): CAPEC-126

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: RAG
Impact: Integrity
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-2026-56273

First tracked: July 8, 2026 at 02:07 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Topics

Retrieval-augmented generation

Summary

Mitigation

Topics

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