MantisBT 1.3.0 < 2.28.4 RCE (GHSA-v84x-qvhg-f36r)

high Nessus Plugin ID 331105

Synopsis

The remote host is affected by a remote code execution vulnerability.

Description

The version of MantisBT installed on the remote host is 1.3.0 or later but prior to 2.28.4. It is, therefore, affected by a vulnerability:

- A remote code execution vulnerability exists in the admin Manage Configuration feature (adm_config_set.php). When setting a configuration value with a non-string type, the value is passed through ConfigParser -> Tokenizer, which calls eval() with a return prefix intended to prevent code execution. However, PHP hoists function and class declarations at compile time, even past a return statement. An attacker can define a class in the eval'd code that hijacks a class loaded later via PHP's autoloader, achieving arbitrary code execution. (CVE-2026-49273)

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

Solution

Upgrade to MantisBT version 2.28.4 or later.

Plugin Details

Severity: High

ID: 331105

File Name: mantis_2_28_4_rce.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 7/30/2026

Updated: 7/30/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.12

CVSS v2

Risk Factor: Medium

Base Score: 6.5

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

CVSS Score Source: CVE-2026-49273

CVSS v3

Risk Factor: High

Base Score: 7.2

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

CVSS v4

Risk Factor: High

Base Score: 8.6

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:mantisbt:mantisbt

Required KB Items: installed_sw/MantisBT

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 7/15/2026

Reference Information

CVE: CVE-2026-49273

IAVA: 2026-B-0202

Detections

Analytics