CVE-2026-31814
7.5 · HIGHOverview
CVE-2026-31814 is a high-severity vulnerability affecting protocol yamux. It was published on March 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.
Remediation
Check the references section for vendor advisories and patches from protocol. Update yamux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| protocol | yamux | >= 0.13.0, < 0.13.9 | Affected |
Frequently Asked Questions
What is CVE-2026-31814?
CVE-2026-31814 is a high-severity vulnerability affecting protocol yamux. It was published on March 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-31814?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-31814?
Check the references section for vendor advisories and patches from protocol. Update yamux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-31814?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-31814 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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