CVE-2026-7663: langflow from 1.0.0 (inclusive), before 1.10.0 (exclusive); +1 more affected products

CVE-2026-7663. CVSS 3.1 base score 9.8 (CRITICAL, NVD). EPSS 0.0052 (percentile 0.43904), scored 25-Oct-2026.

Affected technology

langflow · from 1.0.0 (inclusive), before 1.10.0 (exclusive)
langflow

Langflow OSS · 1.0.0 through 1.9.6
IBM

Description’s affected range: through 1.9.6 could

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Unauthenticated attackers could access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint. Vendor/CNA’s CVSS 3.1 assessment (base score 9.1/10) rates confidentiality and integrity impact as high; availability impact as none. NVD’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-285, CWE-863
CCR priority: 39.3 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.0052 · percentile 0.43904 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-7663.html