# CVE-2026-30849: mantisbt Auth Bypass — Fixed in 2.28.1

🐘 Packagist

Not in CISA KEV

# CVE-2026-30849 — mantisbt

[Fix: mantisbt/mantisbt@b349e5c](https://github.com/mantisbt/mantisbt/commit/b349e5c890eeda9bd82e7c7e14479853f8a30d9f)

CVE-2026-30849 is a CWE-305 vulnerability in mantisbt/mantisbt. A fix is available for mantisbt/mantisbt — see the affected versions and patch details below.

MantisBT SOAP API has an authentication bypass vulnerability on MySQL

Also known as[GHSA-phrq-pc6r-f6gh](/vulnerability/GHSA-phrq-pc6r-f6gh)

Published

Mar 23, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

## Exploitation Status

### No confirmed exploitation observed yet

-   CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
-   A successful exploit gives an attacker total control of the affected component, not partial access.
-   CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-30849.

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

1.8%probability of exploitation in next 30 days

Lower Risk+0.04%

Lower risk than most CVEs79th percentile — riskier than 79% of all scored CVEsHighest risk

0.00%1.01%2.01%3.02%0.1%1.8%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## Real-World Exposure

1 pkg affected

🐘`mantisbt/mantisbt`

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

## Description

Mantis Bug Tracker instances running on MySQL and compatible databases are affected by an authentication bypass vulnerability in the SOAP API, as a result of improper type checking on the password parameter.

Other database backends are not affected, as they do not perform implicit type conversion from string to integer.

#### Impact

Using a crafted SOAP envelope, an attacker knowing the victim's username is able to login to the SOAP API with their account without knowledge of the actual password, and execute any API function they have access to.

#### Patches

-   b349e5c890eeda9bd82e7c7e14479853f8a30d9f

#### Workarounds

-   [Disabling the SOAP API](https://mantisbt.org/docs/master/en-US/Admin_Guide/html-desktop/#admin.config.api.disable) significantly reduces the risk, but still allows the attacker to retrieve user account information including email address and real name.

#### Resources

-   [https://mantisbt.org/bugs/view.php?id=36902](https://mantisbt.org/bugs/view.php?id=36902)

#### Credits

MantisBT thanks Alexander Philiotis of SynerComm for discovering and responsibly reporting the issue.

## Affected Packages

1 total 1 fixed

Ecosystem

Package

Vulnerable range

Fix

🐘Packagist

`mantisbt/mantisbt` 

all versions

2.28.1`composer require mantisbt/mantisbt:^2.28.1`

## Affected Products

1 product · 1 configurations

Application

`mantisbt`mantisbt

< 2.28.1

range

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mantisbt/mantisbt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Fix
    
    Update mantisbt/mantisbt to 2.28.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-30849 is resolved across your whole dependency graph.
    
3.  ### Workarounds
    
    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
    

## How to detect CVE-2026-30849

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

`nuclei -id cve-2026-30849 -u https://target`

Template

MantisBT < 2.28.1 - SOAP API Authentication Bypass

Severity

critical

Impact

Attackers can bypass authentication to access victim accounts and execute API functions, potentially compromising user data and system integrity.

Remediation

Upgrade to version 2.28.1 or later; disabling the SOAP API reduces risk.

Template by [ProjectDiscovery nuclei-templates](https://github.com/projectdiscovery/nuclei-templates) (str4k3r), MIT licensed. [View the full template](https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-30849.yaml). Scan only systems you are authorised to test.

## Frequently Asked Questions

Mantis Bug Tracker instances running on MySQL and compatible databases are affected by an authentication bypass vulnerability in the SOAP API, as a result of improper type checking on the password parameter. Other database backends are not affected, as they do not perform implicit type conversion from string to integer. ### Impact Using a crafted SOAP envelope, an attacker knowing the victim's username is able to login to the SOAP API with their account without knowledge of the actual password, and execute any API function they have access to. ### Patches \* b349e5c890eeda9bd82e7c7e14479853f

O3 Security · Impact-Aware SCA

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