FreeBSD : mail/mailpit -- Server-Side Request Forgery (SSRF) via Link Check API (fe6209a3-126c-11f1-8a62-0897988a1c07)

high Nessus Plugin ID 300453

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the fe6209a3-126c-11f1-8a62-0897988a1c07 advisory.

Mailpit author reports:
The Link Check API (/api/v1/message/{ID}/link-check) is vulnerable to Server-Side Request Forgery (SSRF). The server performs HTTP HEAD requests to every URL found in an email without validating target hosts or filtering private/internal IP addresses. The response returns status codes and status text per link, making this a non-blind SSRF. In the default configuration (no authentication on SMTP or API), this is fully exploitable remotely with zero user interaction.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 300453

File Name: freebsd_pkg_fe6209a3126c11f18a620897988a1c07.nasl

Version: 1.1

Type: local

Family: FreeBSD Local Security Checks

Published: 3/3/2026

Updated: 3/3/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-27808

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:mailpit

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/25/2026

Vulnerability Publication Date: 2/25/2026

Reference Information

CVE: CVE-2026-27808

Detections

Analytics