What’s Vulnerable › Vulnerabilities

CVE-2026-6993: go-kratos http.DefaultServeMux Fallback server.go NewServer confused deputy

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-25 · updated 2026-10-26
• Weakness: CWE-441

Description

A security flaw has been discovered in go-kratos kratos up to 2.9.2. This impacts the function NewServer of the file transport/http/server.go of the component http.DefaultServeMux Fallback Handler. The manipulation results in unintended intermediary. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The patch is identified as 0284a5bcf92b5a7ee015300ce3051baf7ae4718d. Applying a patch is advised to resolve this issue.

Affected products

• go-kratos kratos: 2.9.0, 2.9.1, 2.9.2

References

• https://github.com/Yanhu007/kratos/commit/0284a5bcf92b5a7ee015300ce3051baf7ae4718d
• https://github.com/go-kratos/kratos/
• https://github.com/go-kratos/kratos/issues/3810
• https://github.com/go-kratos/kratos/pull/3814
• https://vuldb.com/submit/797099
• https://vuldb.com/vuln/359545
• https://vuldb.com/vuln/359545/cti

Get alerted when CVE-2026-6993 or the next vulnerability affects your stack