CVE-2026-30849: Mantis Bug Tracker (MantisBT) is an open source issue tracker

Q: How do I fix CVE-2026-30849?

mantisbt: upgrade to 2.28.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-30849 being exploited?

CVE-2026-30849 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-30849 affect?

CVE-2026-30849 affects mantisbt. Severity is critical (CVSS 9.8). 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 th

Q: How urgent is CVE-2026-30849?

Priority 62/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-30849 is a critical-severity flaw (CVSS 9.8) affecting mantisbt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 i

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-305
Published	2026-03-23
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: mantisbt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-23 20:16 UTCPublished CVE record published
2026-06-17 10:33 UTCUpdated Record last modified

mantisbt mantisbt UPGRADE

Affected: < 2.28.1

Fixed in: 2.28.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mantisbt || rpm -q mantisbt || mantisbt --version

2. UPGRADE to 2.28.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mantisbt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mantisbt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Composer (PHP) · mantisbt/mantisbt · FIXED · 2.28.1 · vulnerable: < 2.28.1 · source

composer require "mantisbt/mantisbt:>=2.28.1"

Fedora ELN · perl-Encode · FIXED · 3.25-528.eln159 · FEDORA-2026-79991d0238 · source

sudo dnf upgrade --advisory=FEDORA-2026-79991d0238

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: Gumbraise/CVE-2026-30849-PoC (0 stars)
Nuclei scan template: MantisBT < 2.28.1 - SOAP API Authentication Bypass

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-30849?

mantisbt: upgrade to 2.28.1. Exact commands for each OS are on this page.

Is CVE-2026-30849 being exploited?

CVE-2026-30849 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-30849 affect?

CVE-2026-30849 affects mantisbt. Severity is critical (CVSS 9.8). 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 th

How urgent is CVE-2026-30849?

Priority 62/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

MySQL vulnerabilities

Related CVEs

CVE-2026-33548 MEDIUM 6.1 DOWNGRADE Mantis Bug Tracker (MantisBT) is an open source issue tracker
CVE-2026-33517 MEDIUM 6.1 DOWNGRADE Mantis Bug Tracker (MantisBT) is an open source issue tracker

References

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