Mailpit's IsInternalIP deny list function fails to block the Azure WireServer address 168.63.129.16 and the RFC 2765/6145 IPv4-translated IPv6 prefix, allowing server-side request forgery to internal destinations. Attackers can supply hostnames resolving to these addresses in message content to reach the link check API and proxy endpoint for accessing internal resources.
Metrics
Affected Vendors & Products
References
History
Wed, 02 Sep 2026 10:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 02 Sep 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mailpit's IsInternalIP deny list function fails to block the Azure WireServer address 168.63.129.16 and the RFC 2765/6145 IPv4-translated IPv6 prefix, allowing server-side request forgery to internal destinations. Attackers can supply hostnames resolving to these addresses in message content to reach the link check API and proxy endpoint for accessing internal resources. | |
| Title | Mailpit SSRF Deny List Bypass via Azure Metadata and IPv6 Prefix | |
| First Time appeared |
Axllent
Axllent mailpit |
|
| Weaknesses | CWE-918 | |
| CPEs | cpe:2.3:a:axllent:mailpit:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Axllent
Axllent mailpit |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-02T00:37:53.020Z
Updated: 2026-09-02T14:35:43.099Z
Reserved: 2026-09-01T23:24:24.109Z
Link: CVE-2026-84697
Updated: 2026-09-02T14:35:40.450Z
Status : Received
Published: 2026-09-02T01:17:24.703
Modified: 2026-09-02T15:17:45.967
Link: CVE-2026-84697
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