Detections
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SCA: security update for github.com/axllent/mailpit (GHSA-6jxm-fv7w-rw5j)

high Tenable Self-Hosted Container Security Plugin ID 436834

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Mailpit is an email testing tool and API for developers. Versions prior to 1.28.3 are vulnerable to
 Server-Side Request Forgery (SSRF) via HTML Check CSS Download. The HTML Check feature
 (`/api/v1/message/{ID}/html-check`) is designed to analyze HTML emails for compatibility. During this
 process, the `inlineRemoteCSS()` function automatically downloads CSS files from external `<link
 rel="stylesheet" href="...">` tags to inline them for testing. Version 1.28.3 fixes the issue.
 (CVE-2026-23845)

See Also

https://github.com/advisories/GHSA-6jxm-fv7w-rw5j

Plugin Details

Severity: High

ID: 436834

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 1/21/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

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-2026-23845

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/21/2026

Vulnerability Publication Date: 1/19/2026

Reference Information

CVE: CVE-2026-23845

cwe: CWE-918