Vulnerability in Aapanel Billionmail
CVE-2026-124579
A vulnerability was determined in aaPanel BillionMail up to 4.9. Affected by this issue is some unknown functionality of the file core/api/relay/v1/relay.go of the component Relay Configuration API. Executing a manipulation of the argument helo_name can lead to injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Aapanel Billionmail — versions 4.0, 4.1, 4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/432929 (technical-description, vdb-entry)
- vuldb.com/vuln/432929/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-124579 (third-party-advisory)
- vuldb.com/submit/1038400 (third-party-advisory)
- gist.github.com/stoic-crawler/07c4b68b76b870659ade38d0035fced8 (exploit)
Frequently asked questions
- What is CVE-2026-124579?
- CVE-2026-124579 is a high-severity vulnerability in Aapanel Billionmail, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2026-11-09.
- How severe is CVE-2026-124579?
- High severity. CVSS v3 base score is 7.4 out of 10.