CVE-2026-6993

go-kratos http.DefaultServeMux Fallback server.go NewServer confused deputy

MEDIUM
5.3
CVSS Score
Published: April 25, 2026 at 06:30 PM UTC
Updated: October 26, 2026 at 10:10 PM UTC
1 product affected across 1 vendorKratos

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/359545
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/359545/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/797099
ExploitIssue Tracking
Source: cverecord
https://github.com/go-kratos/kratos/issues/3810
Issue TrackingPatch
Source: cverecord
https://github.com/go-kratos/kratos/pull/3814
Product
Source: cverecord
https://github.com/go-kratos/kratos/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-441

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