CVE-2026-7663
CRITICALCVSS 9.8/10EPSS 0.24%
Last modified
CVE-2026-7663 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Langflow | Langflow | >= 1.0.0, < 1.10.0 |
References
- https://www.ibm.com/support/pages/node/7277570Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-7663?
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.
How severe is CVE-2026-7663?
CVE-2026-7663 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-7663?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-76610Joomla Extension - yootheme.com - Unauthenticated tag modifi…6.9
- CVE-2026-76611Joomla Extension - yootheme.com - Unauthenticated arbitrary …6.9
- CVE-2026-76612Joomla Extension - yootheme.com - Unauthenticated stored XSS…8.6
- CVE-2026-76613Joomla Extension - yootheme.com - Authenticated, privileged …8.6
- CVE-2026-76614OpenEMR before 8.3.0 contains a path traversal vulnerability…4.3
- CVE-2026-7662The ePaperFlip Publisher plugin for WordPress is vulnerable …6.4
- CVE-2026-76632Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2026-76633WeGIA before 3.9.2 contains an authorization bypass vulnerab…8.1
- CVE-2026-76634WeGIA before 3.9.2 contains an insecure direct object refere…6.5
- CVE-2026-76635baserCMS before 5.3.0 contains a SQL injection vulnerability…7.2
- CVE-2026-76639Unitree G1 EDU firmware through 1.5.2 contains an unauthenti…8.8
- CVE-2026-7664IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthentic…9.8
Are you affected by CVE-2026-7663?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST