CVE-2026-30849
CriticalMantisBT is vulnerable to authentication bypass through the SOAP API on MySQL
Published Mar 23, 2026 · Updated Aug 12, 2026 · Also known as GHSA-phrq-pc6r-f6gh
Key Facts
Patch in the next maintenance window- CVE-2026-30849 is a critical-severity vulnerability (CVSS 9.3 v4) affecting Mantisbt, mantisbt/mantisbt (composer).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 2.4% probability of exploitation in the next 30 days.
- Fixed versions are available, including Mantisbt 2.28.1, mantisbt/mantisbt 2.28.1.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
CVSS v4
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (30-day exploit likelihood)
2.4%
Higher than 83.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2026-30849 brief as a PDF
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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.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| MantisbtMantisbt | >= < 2.28.1 | 2.28.1 |
| mantisbt/mantisbtcomposer | See advisory | 2.28.1 |
Patched Releases
Mantisbt
2.28.1
mantisbt/mantisbt
2.28.1
Timeline
Publicly disclosed
Mar 23, 2026
Last updated
Aug 12, 2026
Weakness Type
- CWE-305 Authentication Bypass by Primary Weakness
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30849.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-30849
- otherhttps://github.com/mantisbt/mantisbt
- otherhttps://github.com/mantisbt/mantisbt/commit/b349e5c890eeda9bd82e7c7e14479853f8a30d9f
FAQ
Common Questions.
Mantis Bug Tracker (MantisBT) is an open source issue tracker.
Affected: Mantisbt versions >= < 2.28.1; mantisbt/mantisbt (composer). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Mantisbt 2.28.1, mantisbt/mantisbt 2.28.1.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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