Detections
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SCA: security update for github.com/axllent/mailpit (GHSA-28pq-6qxg-wg5r)

medium Tenable Cloud Security Plugin ID 444251

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. Prior to version 1.30.1, the fix for GHSA-
 fpxj-m5q8-fphw (CVE-2026-45710, "Mailpit: Set a default 50MB p/m limit to prevent DoS via unlimited SMTP
 DATA and /api/v1/send body sizes") wrapped only `POST /api/v1/send` with `http.MaxBytesReader`. The four
 other Mailpit JSON-body API endpoints `PUT /api/v1/messages` (SetReadStatus), `DELETE /api/v1/messages`
 (DeleteMessages), `PUT /api/v1/tags` (SetMessageTags), and `POST /api/v1/message/{id}/release`
 (ReleaseMessage) still call `json.NewDecoder(r.Body)` directly with no body-size cap and remain reachable
 unauthenticated in the default `docker run axllent/mailpit:latest` deploy. An unauthenticated remote
 attacker can post a multi-million-element `IDs` slice and drive RSS from ~25 MiB baseline to ~450 MiB per
 16 MB request body. Repeating across multiple connections accumulates the same per-request amplification
 per process. Version 1.30.1 contains a patch. (CVE-2026-48824)

Solution

Update the github.com/axllent/mailpit library and its related packages to version 1.30.1 or later.

See Also

https://github.com/advisories/GHSA-28pq-6qxg-wg5r

Plugin Details

Severity: Medium

ID: 444251

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 7/2/2026

Updated: 7/29/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-48824

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 5/28/2026

Reference Information

CVE: CVE-2026-48824

cwe: CWE-770