CVE-2026-15541

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

State: Published
Severity: 6.9 Medium
Published: Jul 13, 2026
Updated: Jul 13, 2026
Reserved: Jul 12, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	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	VulDB
3.1	7.3 High	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	VulDB
3.0	7.3 High	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	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR	VulDB

Weaknesses

CWE-862 Missing Authorization
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
Isaiahwill-moss	1.36.0Affected 1.36.1Affected 1.36.2Affected 1.36.3Affected 1.36.4Affected 1.36.5Affected 1.36.6Affected 1.36.7Affected 1.36.8Affected 1.36.9Affected

References

VDB-377891 | will-moss Isaiah Master Websocket server.go Server.Handle authorizationvdb-entrytechnical-description
VDB-377891 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-15541 | CVE Analysis and Reportthird-party-advisory
Submit #855074 | will-moss Isaiah 1.36.9 CWE-862 Missing Authorizationthird-party-advisory
https://github.com/will-moss/isaiah/issues/34issue-tracking
https://github.com/will-moss/isaiah/pull/35issue-trackingpatch
https://github.com/will-moss/isaiah/product

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