Sipeed PicoClaw First Run Setup access_control.go authentication bypass

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16198
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 00:16:40 UTC
Updated2026-07-21 15:16:32 UTC
DescriptionA vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in authentication bypass using alternate channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is regarded as difficult. The exploit is now public and may be used. The patch is named 017601354be38cb027ff3ffb01aed79bd5d12610. Applying a patch is the recommended action to fix this issue.

Risk And Classification

Primary CVSS: v4.0 2.9 LOW from [email protected]

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.006070000 probability, percentile 0.451460000 (date 2026-07-21)

Problem Types: CWE-287 | CWE-288 | CWE-288 Authentication Bypass Using Alternate Channel | CWE-287 Improper Authentication

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.9LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED6.3MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary5.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED5.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED5.6MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary5.1AV:N/AC:H/Au:N/C:P/I:P/A:P
2.0CNADECLARED5.1AV:N/AC:H/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sipeed PicoClaw affected 0.2.0 Not specified
CNA Sipeed PicoClaw affected 0.2.1 Not specified
CNA Sipeed PicoClaw affected 0.2.2 Not specified
CNA Sipeed PicoClaw affected 0.2.3 Not specified
CNA Sipeed PicoClaw affected 0.2.4 Not specified
CNA Sipeed PicoClaw affected 0.2.5 Not specified
CNA Sipeed PicoClaw affected 0.2.6 Not specified
CNA Sipeed PicoClaw affected 0.2.7 Not specified
CNA Sipeed PicoClaw affected 0.2.8 Not specified
CNA Sipeed PicoClaw affected 0.2.9 Not specified

References

ReferenceSourceLinkTags
github.com/sipeed/picoclaw/pull/3083 [email protected] github.com
vuldb.com/vuln/380014 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-16198 [email protected] vuldb.com
vuldb.com/vuln/380014/cti [email protected] vuldb.com
github.com/sipeed/picoclaw/commit/017601354be38cb027ff3ffb01aed79bd5d12610 [email protected] github.com
github.com/sipeed/picoclaw [email protected] github.com
github.com/sipeed/picoclaw/issues/3080 [email protected] github.com
vuldb.com/submit/852965 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Eric-i (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-18T00:00:00.000ZAdvisory disclosed
CNA2026-07-18T02:00:00.000ZVulDB entry created
CNA2026-07-18T09:28:00.000ZVulDB entry last update

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