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CVE Vulnerability Details :
CVE-2026-6993
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-25 Apr, 2026 | 18:30
Updated At-27 Apr, 2026 | 13:41
Rejected At-
▼CVE Numbering Authority (CNA)
go-kratos http.DefaultServeMux Fallback server.go NewServer confused deputy

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
Vendor
go-kratos
Product
kratos
Modules
  • http.DefaultServeMux Fallback Handler
Versions
Affected
  • 2.9.0
  • 2.9.1
  • 2.9.2
Problem Types
TypeCWE IDDescription
CWECWE-441Unintended Intermediary
Type: CWE
CWE ID: CWE-441
Description: Unintended Intermediary
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
3.05.3MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
2.05.0N/A
AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
Version: 3.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
Version: 2.0
Base score: 5.0
Base severity: N/A
Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Yu_Bao (VulDB User)
Timeline
EventDate
Advisory disclosed2026-04-24 00:00:00
VulDB entry created2026-04-24 02:00:00
VulDB entry last update2026-04-24 21:48:42
Event: Advisory disclosed
Date: 2026-04-24 00:00:00
Event: VulDB entry created
Date: 2026-04-24 02:00:00
Event: VulDB entry last update
Date: 2026-04-24 21:48:42
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/359545
vdb-entry
technical-description
https://vuldb.com/vuln/359545/cti
signature
permissions-required
https://vuldb.com/submit/797099
third-party-advisory
https://github.com/go-kratos/kratos/issues/3810
exploit
issue-tracking
https://github.com/go-kratos/kratos/pull/3814
issue-tracking
patch
https://github.com/Yanhu007/kratos/commit/0284a5bcf92b5a7ee015300ce3051baf7ae4718d
patch
https://github.com/go-kratos/kratos/
product
Hyperlink: https://vuldb.com/vuln/359545
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/vuln/359545/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/797099
Resource:
third-party-advisory
Hyperlink: https://github.com/go-kratos/kratos/issues/3810
Resource:
exploit
issue-tracking
Hyperlink: https://github.com/go-kratos/kratos/pull/3814
Resource:
issue-tracking
patch
Hyperlink: https://github.com/Yanhu007/kratos/commit/0284a5bcf92b5a7ee015300ce3051baf7ae4718d
Resource:
patch
Hyperlink: https://github.com/go-kratos/kratos/
Resource:
product
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found