CVE-2026-15541

will-moss Isaiah Master Websocket server.go Server.Handle authorization

Assigner: VulDB
Reserved: 12.07.2026 Published: 13.07.2026 Updated: 13.07.2026

A flaw has been found in will-moss Isaiah up to 1.36.9. The impacted element is the function Server.Handle of the file app/server/server/server.go of the component Master Websocket Handler. Executing a manipulation of the argument Agent can lead to missing authorization. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
CVSS Score: 7.3

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

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
CVSS Score: 7.3

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

CVSS 3.0

CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
CVSS Score: 7.5

Access Vector	Network	Confidentiality Impact	Partial
Access Complexity	Low	Integrity Impact	Partial
Authentication	None	Availability Impact	Partial

CVSS 2.0

Product Status

Vendor	will-moss
Product	Isaiah
Versions	Version 1.36.0 is affected Version 1.36.1 is affected Version 1.36.2 is affected Version 1.36.3 is affected Version 1.36.4 is affected Version 1.36.5 is affected Version 1.36.6 is affected Version 1.36.7 is affected Version 1.36.8 is affected Version 1.36.9 is affected

Vendor

will-moss

Product

Isaiah

Versions

Version 1.36.0 is affected
Version 1.36.1 is affected
Version 1.36.2 is affected
Version 1.36.3 is affected
Version 1.36.4 is affected
Version 1.36.5 is affected
Version 1.36.6 is affected
Version 1.36.7 is affected
Version 1.36.8 is affected
Version 1.36.9 is affected

Credits

Dem0000000 (VulDB User) reporter
VulDB CNA Team coordinator

References

Problem Types