Vulnerability record
CVE-2026-124579
The short answer
CVE-2026-124579 affects aaPanel BillionMail and is rated low (CVSS 2.1). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.23%.
What it is
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.
Severity
2.1 low
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.23%
Higher than 14% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- Low
- User interaction
- None
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- Low
Affected products
BillionMail. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-124579 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-10. FIRST's EPSS estimates a 0.23% chance of exploitation in the next 30 days.
How do I fix CVE-2026-124579?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Deferred. The description is NVD's text, quoted as published.
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