CVE-2026-15541

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-07-13. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.3
EG Score
7.3(high)
EPSS
23.5%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (3)

Auto-updated Jul 13, 2026
No patch confirmed yet. Sources: github_pr.
github_pr

Require authentication before forwarding agent commands

Upstream fix in progress (PR #35 · will-moss/isaiah, state=open)

https://github.com/will-moss/isaiah/pull/35
generic

Authentication bypass in Agent forwarding path before Master session check · Issue #34 · will-moss/isaiah · GitHub

https://github.com/will-moss/isaiah/issues/34
generic

GitHub - will-moss/isaiah: Self-hostable clone of lazydocker for the web. Manage your Docker fleet with ease · GitHub

https://github.com/will-moss/isaiah/

Vendor Advisories for CVE-2026-15541(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-14 08:03 UTCEG score recompute
  2. 2026-07-14 08:03 UTCGHSA enrichment
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 19:52 UTCEG score recompute
  5. 2026-07-13 19:52 UTCGHSA enrichment
  6. 2026-07-13 07:43 UTCEG score recompute
  7. 2026-07-13 07:42 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15541?
CVE-2026-15541 is a high vulnerability published on July 13, 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…
When was CVE-2026-15541 disclosed?
CVE-2026-15541 was first published in the National Vulnerability Database on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15541 actively exploited?
CVE-2026-15541 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15541?
CVE-2026-15541 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-15541?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15541, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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