CVE-2026-15541will-moss Isaiah Master Websocket server.go Server.Handle authorization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)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
- Weakness (CWE)
- CWE-862, CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Jul 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
will-moss Isaiah will-moss:isaiah | 1.36.0; 1.36.1; 1.36.2; 1.36.3; 1.36.4; 1.36.5; 1.36.6; 1.36.7; and 2 more ranges | CNA record |
References
- https://vuldb.com/vuln/377891vdb-entry, technical-description
- https://vuldb.com/vuln/377891/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-15541third-party-advisory
- https://vuldb.com/submit/855074third-party-advisory
- https://github.com/will-moss/isaiah/issues/34issue-tracking
- https://github.com/will-moss/isaiah/pull/35issue-tracking, patch
- https://github.com/will-moss/isaiah/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.