Detections
Analytics

SCA: security update for mantisbt/mantisbt (GHSA-c2xg-qjqw-2v98)

critical Tenable Cloud Security Plugin ID 444742

Description

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

 - MantisBT is an open source bug tracker. Versions 2.28.3 and earlier contain a critical authentication
 bypass in the SOAP API's mci_check_login() function. Any user knowing any valid cookie_string can
 authenticate as any other user (knowing their username), including the administrator, without knowing the
 target's password. The vulnerability is exploitable with zero prior access on default MantisBT
 installations because self-registration is enabled by default ($g_allow_signup = ON). A self-registered
 user can use their own cookie_string (readable from their browser's MANTIS_STRING_COOKIE cookie after
 login) to impersonate the administrator via the SOAP API. The REST API is NOT affected. The REST API's
 AuthMiddleware derives the username server-side from the API token or session cookie, so the username
 cannot be spoofed. The Web UI is NOT affected. The Web UI authenticates via PHP session cookies
 (PHPSESSID) and validates the MANTIS_STRING_COOKIE against the logged-in user through
 auth_is_cookie_valid(). The username is derived server-side from the cookie, not supplied by the client.
 Version 2.28.4 contains a patch. No known workarounds are available. (CVE-2026-47156)

Solution

Update the mantisbt/mantisbt library and its related packages to version 2.28.4 or later.

See Also

https://github.com/advisories/GHSA-c2xg-qjqw-2v98

Plugin Details

Severity: Critical

ID: 444742

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/15/2026

Updated: 9/10/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.12

Vendor

Vendor Severity: Critical

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-2026-47156

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: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 7/15/2026

Reference Information

CVE: CVE-2026-47156