Homer: Complete Authentication Bypass When coordinator.jwt.secret Is Empty (Default)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

• CVE-2026-62253: 0.54% estimated exploitation activity in the next 30 days; percentile 45.29 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Both JWT middleware functions (JWTMiddleware and JWTMiddlewareV4) immediately return next(c) when jwtSecret == "". The JWT secret defaults to an empty string. On a default installation, all protected API endpoints under /api/v1, /api/v3, and /api/v4 are completely unauthenticated. Details coordinator/handlers/auth.go lines 298-304: coordinator/handlers/authv4helpers.go lines 177-182: coordinator/coordinator.go lines 315-317: config/config.go line 845: Secret field struct tag has default:"". The example config ships a placeholder value, but the Go struct default (used when no config is provided) is empty. PoC Impact Missing Authentication for Critical Function (CWE-306). On a default Homer installation with no JWT secret configured, every admin API endpoint is completely unauthenticated. Attackers can read/write all configuration, users, database connections, and stored VoIP call data. Fix Fail closed: if JWT.Secret is empty at startup, abort with a fatal error requiring the…

Published by the source

7 Oct 2026, 16:11 UTC

Last modified by the source

20 Oct 2026, 00:45 UTC

Source last checked

26 Oct 2026, 15:29 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-rqcc-94gv-wjm9

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6673

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-rqcc-94gv-wjm9

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# Patch Next advisory brief: CVE-2026-62253

Advisory: Homer: Complete Authentication Bypass When coordinator.jwt.secret Is Empty (Default)
IDs: CVE-2026-62253, GHSA-rqcc-94gv-wjm9
Record: https://patchnext.com/advisories/cve-2026-62253 (revision 3, source checked 26 Oct 2026, 15:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/sipcapture/homer-app 0.0.0-20260625093330-5e90809657c9. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/sipcapture/homer-app: affected < 0.0.0-20260625093330-5e90809657c9; fixed in 0.0.0-20260625093330-5e90809657c9

## Suggested inspection (read-only)
- Go github.com/sipcapture/homer-app: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/sipcapture/homer-app.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6673 (OSV record GO-2026-6673 lists affected ranges: Go github.com/sipcapture/homer-app >=0)
- Verified: https://osv.dev/vulnerability/GHSA-rqcc-94gv-wjm9 (OSV record GHSA-rqcc-94gv-wjm9 lists affected ranges: Go github.com/sipcapture/homer-app >=0 <0.0.0-20260625093330-5e90809657c9 (fixed))
- Verified: https://github.com/advisories/GHSA-rqcc-94gv-wjm9 (GitHub-reviewed advisory GHSA-rqcc-94gv-wjm9 lists affected ranges: Go github.com/sipcapture/homer-app >=0 <0.0.0-20260625093330-5e90809657c9)

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