Vulnerability in Go-Kratos Kratos
CVE-2026-6993
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Go-Kratos Kratos — versions 2.9.0, 2.9.1, 2.9.2
Weakness classification (CWE)
References
- vuldb.com/vuln/359545 (technical-description, vdb-entry)
- vuldb.com/vuln/359545/cti (signature, permissions-required)
- vuldb.com/submit/797099 (third-party-advisory)
- github.com/go-kratos/kratos/issues/3810 (issue-tracking, exploit)
- github.com/go-kratos/kratos/pull/3814 (issue-tracking, patch)
- github.com/Yanhu007/kratos/commit/0284a5bcf92b5a7ee015300ce3051baf7ae4718d (patch)
- github.com/go-kratos/kratos/ (product)
Frequently asked questions
- What is CVE-2026-6993?
- CVE-2026-6993 is a medium-severity vulnerability in Go-Kratos Kratos, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 5.3/10. Published 2026-04-25.
- How severe is CVE-2026-6993?
- Medium severity. CVSS v3 base score is 5.3 out of 10.