CVE-2026-111367: Use of Default Cryptographic Key in aaPanel BillionMail
Description
BillionMail through 4.9 contains a hard-coded cryptographic key vulnerability that allows unauthenticated attackers to forge unsubscribe and subscribe-confirm JWTs by computing the key from shipped configuration constants. Attackers can submit forged tokens to /api/unsubscribe, /api/unsubscribe_new, or /api/subscribe/confirm to deactivate any contact or force confirmed subscriptions.
CVSS v4.0
Score 6.9medium
Affected software
aaPanel
BillionMail
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Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-15T21:21:22.403Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad14e352cdf04f65660853f
Added to database: 10/15/2026, 22:05:41 UTC
Last updated: 10/15/2026, 22:05:41 UTC
Views: 1
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