CVE-2026-7663
Published: 30 June 2026
Summary
CVE-2026-7663 is a critical-severity Improper Authorization (CWE-285) vulnerability in Langflow Langflow. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-40384
Vulnerability details
IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper authorization on public Streamable MCP endpoint directly enables unauthenticated remote access and operation execution against a public-facing application.
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Documented procedures facilitate correct implementation and ongoing management of authorization decisions.
Periodic reviews identify and correct flaws in authorization decisions or enforcement.
Establishing permitted attributes and values, plus auditing changes, ensures authorization decisions are based on correctly managed policy data.
Explicitly mandates authorizing remote access types before permitting connections, directly mitigating improper authorization.
The control explicitly requires authorization of each wireless access type prior to permitting connections.
Mandating explicit authorization of mobile device connections reduces the risk of improper authorization decisions for system access.
Specifying access authorizations for each account and requiring approvals for account requests enforces proper authorization decisions.
Requires explicit authorization for individuals to use external systems to access or handle organization-controlled information.
Hardening callouts derived
Configuration rules from DISA STIG baselines that reduce the attack surface for weaknesses of the type cited by this CVE. Derived transitively via CVE→CWE→STIG over `controls_xwalks` (authoritative rows only).
Oracle Linux 8 (4 rules)
- V-248581 OL 8 must require users to provide a password for privilege escalation. via CWE-863
- V-252656 The OL 8 operating system must not be configured to bypass password requirements for privilege escalation. via CWE-285
- V-252656 The OL 8 operating system must not be configured to bypass password requirements for privilege escalation. via CWE-863
RHEL 7 (5 rules)
- V-204429 The Red Hat Enterprise Linux operating system must be configured so that users must provide a password for privilege escalation. via CWE-285
- V-251704 The Red Hat Enterprise Linux operating system must not be configured to bypass password requirements for privilege escalation. via CWE-285
- V-204430 The Red Hat Enterprise Linux operating system must be configured so that users must re-authenticate for privilege escalation. via CWE-285
RHEL 8 (2 rules)
- V-251712 The RHEL 8 operating system must not be configured to bypass password requirements for privilege escalation. via CWE-285
- V-251712 The RHEL 8 operating system must not be configured to bypass password requirements for privilege escalation. via CWE-863