CVE-2026-15542Network attack vector

Unauthenticated Docker management via trusted-header spoofing

Published Jul 13, 2026 · Updated Jul 13, 2026

Improper authentication in Will Moss Isaiah 1.36.0 through 1.36.9 allows remote attackers to access Docker management via a forged proxy header. The /ws connection hook in app/main.go accepts the configured forward-proxy header and marks the session authenticated without verifying a trusted proxy source. Exploitation requires forward-proxy authentication plus direct backend reachability or a proxy that preserves client-supplied headers, exposing authenticated Docker data and operations.

CVSS severity6.9
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Will Moss Isaiah 1.36.0 through 1.36.9 allows remote attackers to access Docker management via a forged proxy header. The /ws connection hook in app/main.go accepts the configured forward-proxy header and marks the session authenticated without verifying a trusted proxy source. Exploitation requires forward-proxy authentication plus direct backend reachability or a proxy that preserves client-supplied headers, exposing authenticated Docker data and operations.

The record

CVE
CVE-2026-15542
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
Will Moss
Product
Isaiah
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.36.0
  2. Affected versionversion=1.36.1
  3. Affected versionversion=1.36.2
  4. Affected versionversion=1.36.3
  5. Affected versionversion=1.36.4
  6. Affected versionversion=1.36.5
  7. Affected versionversion=1.36.6
  8. Affected versionversion=1.36.7
  9. Affected versionversion=1.36.8
  10. Affected versionversion=1.36.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Will Moss · Isaiahversion=1.36.0; version=1.36.1; version=1.36.2; version=1.36.3; version=1.36.4; version=1.36.5; version=1.36.6; version=1.36.7; version=1.36.8; version=1.36.9

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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