High severity · published Jul 13, 2026
CVE-2026-15542
will-moss Isaiah Websocket Connection Authentication main.go improper authentication
7.3
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this issue awaits acceptance.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IS
Isaiah · will-moss
1.36.0; 1.36.1; 1.36.2; 1.36.3; 1.36.4; 1.36.5; +4 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15542
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15542
github.com
https://github.com/will-moss/isaiah/
github.com
https://github.com/will-moss/isaiah/issues/33
github.com
https://github.com/will-moss/isaiah/pull/36
vuldb.com
https://vuldb.com/cve/CVE-2026-15542
vuldb.com
https://vuldb.com/submit/855075
vuldb.com
https://vuldb.com/vuln/377892
More from Isaiah
7.3
CVE-2026-15541
will-moss Isaiah Master Websocket server.go Server.Handle authorization