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SCA: security update for mantisbt/mantisbt (GHSA-frf7-jhp9-jxm6)

medium Tenable Self-Hosted Container Security Plugin ID 441748

Description

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

 - Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior have a Privilege
 Escalation vulnerability where insufficient access control checks in ProjectUsersAddCommand
 (manage_proj_user_add.php) allow users having manage_project_threshold access level (manager by default)
 to grant project-level administrator access to any user (including themselves) in any Project they have
 manager rights in. The normal project-user add form restricts the selectable access levels to the actor's
 own project role or below. However, the backend handler still accepts a forged higher access_level value
 and writes it. The consequences of the privilege escalation are slight, as having administrator access at
 Project level is effectively not very different from being manager, and it does not actually give
 administrator privileges on the whole MantisBT instance. In particular, it does not let the upgraded user
 delete the Project or grant them any access to global administrative functions such as managing Users,
 Projects, Plugins, Custom Fields, etc. This issue has been fixed in version 2.28.2. (CVE-2026-34390)

Solution

Update the mantisbt/mantisbt library and its related packages to version 2.28.2 or later.

See Also

https://github.com/advisories/GHSA-frf7-jhp9-jxm6

Plugin Details

Severity: Medium

ID: 441748

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 5/12/2026

Updated: 5/20/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.85

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-34390

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.1

Threat Score: 1.2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/11/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-34390

cwe: CWE-284