nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90807
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 18:20:28 UTC
Updated2026-09-16 17:18:17 UTC
DescriptionA vulnerability was found in nanocoai NanoClaw up to 2.1.17. This issue affects the function forwardAttachedFiles of the file src/modules/agent-to-agent/agent-route.ts of the component Attachment Handler. The manipulation results in link following. The attack may be performed from remote. The exploit has been made public and could be used. The patch is identified as 3f9ed607b7e7a4872747295f75286f1c377d7c33. It is advisable to implement a patch to correct this issue.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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: 0.002880000 probability, percentile 0.214590000 (date 2026-09-16)

Problem Types: CWE-59 | CWE-59 Link Following

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

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

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nanocoai NanoClaw affected 2.1.0 Not specified
CNA Nanocoai NanoClaw affected 2.1.1 Not specified
CNA Nanocoai NanoClaw affected 2.1.2 Not specified
CNA Nanocoai NanoClaw affected 2.1.3 Not specified
CNA Nanocoai NanoClaw affected 2.1.4 Not specified
CNA Nanocoai NanoClaw affected 2.1.5 Not specified
CNA Nanocoai NanoClaw affected 2.1.6 Not specified
CNA Nanocoai NanoClaw affected 2.1.7 Not specified
CNA Nanocoai NanoClaw affected 2.1.8 Not specified
CNA Nanocoai NanoClaw affected 2.1.9 Not specified
CNA Nanocoai NanoClaw affected 2.1.10 Not specified
CNA Nanocoai NanoClaw affected 2.1.11 Not specified
CNA Nanocoai NanoClaw affected 2.1.12 Not specified
CNA Nanocoai NanoClaw affected 2.1.13 Not specified
CNA Nanocoai NanoClaw affected 2.1.14 Not specified
CNA Nanocoai NanoClaw affected 2.1.15 Not specified
CNA Nanocoai NanoClaw affected 2.1.16 Not specified
CNA Nanocoai NanoClaw affected 2.1.17 Not specified

References

ReferenceSourceLinkTags
github.com/nanocoai/nanoclaw/issues/2828 [email protected] github.com
github.com/nanocoai/nanoclaw/commit/3f9ed607b7e7a4872747295f75286f1c377d... [email protected] github.com
vuldb.com/submit/922841 [email protected] vuldb.com
vuldb.com/vuln/403309 [email protected] vuldb.com
github.com/nanocoai/nanoclaw [email protected] github.com
vuldb.com/vuln/403309/cti [email protected] vuldb.com
vuldb.com/cve/CVE-2026-90807 [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-a (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-13T00:00:00.000ZAdvisory disclosed
CNA2026-09-13T02:00:00.000ZVulDB entry created
CNA2026-09-13T18:05:39.000ZVulDB entry last update

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