Security Digest · Vulnerability record
CVE-2026-62253: Homer: Complete Authentication Bypass When coordinator.jwt.secret Is Empty (Default)
Homer is open source telecom observability software.
CVSS 9.8 Critical EPSS 0.4% · p35
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.4%, percentile 35: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 35% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
github.com/sipcapture/homer-app(Go) < 0.0.0-20260625093330-5e90809657c9, fixed in 0.0.0-20260625093330-5e90809657c9. Check your lockfile, including transitive dependencies.
What it is
Homer is open source telecom observability software. Prior to version 11.0.283, 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. Version 11.0.283 patches the issue.
From the GitHub advisory
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.
Weakness type: CWE-306.
Product: github.com/sipcapture/homer-app (Go) · Assigned by: GitHub_M · Published: 2026-10-07
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Go | github.com/sipcapture/homer-app | < 0.0.0-20260625093330-5e90809657c9 | 0.0.0-20260625093330-5e90809657c9 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| sipcapture | homer | < 11.0.283 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.42% probability of exploitation activity in the next 30 days; percentile 35.
Timeline
- — CVE record published by GitHub_M
- — GitHub-reviewed advisory GHSA-rqcc-94gv-wjm9 published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-rqcc-94gv-wjm9 github.com
- CVE.org record CVE-2026-62253 cve.org
- NVD entry CVE-2026-62253 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com