CVE-2026-30849: MantisBT is vulnerable to authentication bypass through the SOAP API on MySQL
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions prior to 2.28.1 running on MySQL family databases are affected by an authentication bypass vulnerability in the SOAP API, as a result of an 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. 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. Version 2.28.1 contains a patch. Disabling the SOAP API significantly reduces the risk, but still allows the attacker to retrieve user account information including email address and real name.
Other sources
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 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
Credits MantisBT thanks Alexander Philiotis of SynerComm for discovering and responsibly reporting the issue.
— GitHub
MantisBT is vulnerable to authentication bypass through the SOAP API on MySQL
— Packagist
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/mantisbt/mantisbtto a version that resolves this vulnerability.Fixed in 2.28.1 - Upgrade
Upgrade
MantisBTto a version that resolves this vulnerability.Fixed in 2.28.1 - Configuration
Disable the SOAP API to significantly reduce the risk; users may still be exposed through retrieval of account information including email address and real name.
MantisBT SOAP API SOAP API = disabled
Event History
Frequently Asked Questions
What is the severity of CVE-2026-30849?
The severity of CVE-2026-30849 is considered high due to the possibility of authentication bypass.
How do I fix CVE-2026-30849?
To fix CVE-2026-30849, upgrade MantisBT to version 2.28.1 or later.
What software versions are affected by CVE-2026-30849?
CVE-2026-30849 affects all versions of MantisBT prior to 2.28.1.
What type of vulnerability is CVE-2026-30849?
CVE-2026-30849 is an authentication bypass vulnerability within the SOAP API.
Which databases are affected by CVE-2026-30849?
CVE-2026-30849 affects MantisBT when it is running on MySQL family databases.