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CVE-2026-30849

Mantisbt authentication bypass

9.8 CRITICALEPSS 2.35%
  1. Published23 Mar 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mantisbt< 2.28.1

Remediation

Fixed in
Mantisbt≥ 2.28.1

References

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Frequently asked

Is CVE-2026-30849 being actively exploited?

CVE-2026-30849 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.35%.

How severe is CVE-2026-30849?

CVE-2026-30849 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.35% probability of exploitation.

Which products are affected by CVE-2026-30849?

Affected products include Mantisbt.

How do I fix CVE-2026-30849?

Upgrade affected software to a fixed version, for example Mantisbt 2.28.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-30849 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.