CVE-2026-62252: Homer: Hardcoded Default Admin Password 'sipcapture' With No Forced Change on First Login

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 0.7%, percentile 51: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 51% of all scored CVEs (moderate). 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) < 0.0.0-20260625091610-b2e942031ff8, fixed in 0.0.0-20260625091610-b2e942031ff8. Check your lockfile, including transitive dependencies.

What it is

Homer is open source telecom observability software. Prior to version 11.0.283, on every fresh Homer deployment using internal authentication, the bootstrap process automatically creates an admin account with the password sipcapture (stored as a legacy SHA-256 hex hash). There is no first-login forced-change mechanism. Any attacker who reaches the login endpoint immediately gains full administrative access. Version 11.0.283 patches the issue.

From the GitHub advisory

Summary On every fresh Homer deployment using internal authentication, the bootstrap process automatically creates an admin account with the password sipcapture (stored as a legacy SHA-256 hex hash). There is no first-login forced-change mechanism. Any attacker who reaches the login endpoint immediately gains full administrative access.

Details config/config.go lines 858-861:

coordinator/services/authbootstrap.go lines 20-71: EnsureBootstrapAdminUser() runs at startup. If no admin user exists, it inserts a row with username=admin, passwordhash=DefaultInternalAuthPasswordHash. No forcechange, no firstlogin flag, no expiry is set.

coordinator/services/authbootstraptest.go line 114 confirms the plaintext:

passwordhash/password.go lines 36-45: Legacy SHA-256 hex hashes are accepted via legacySHA256HexEqual, so the default credential is functional on any deployment.

Weakness type: CWE-798.

Product: github.com/sipcapture/homer-app (Go) · Assigned by: GitHub_M · Published: 2026-10-07

Affected and fixed versions

Severity scores

• 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): 0.65% probability of exploitation activity in the next 30 days; percentile 51.

Timeline

• 2026-10-07 — CVE record last updated
• 2026-10-07 — CVE record published by GitHub_M
• 2026-10-07 — GitHub-reviewed advisory GHSA-6xp5-7rcx-xfgx published (critical)

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-6xp5-7rcx-xfgx github.com
2. CVE.org record CVE-2026-62252 cve.org
3. NVD entry CVE-2026-62252 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com
2. github.com github.com
3. github.com github.com
4. github.com github.com

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