CVE-2026-34970
MantisBT Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
MantisBT Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2.
- Record
CVE-2026-34970- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2026-31005
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2.
- Record
EUVD-2026-31005- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-crmx-4p49-46m2
MantisBT: Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
MantisBT allows a bugnote author to access the note's Revisions page after losing access to the parent private issue.
Impact
Disclosure of the private Issue's Id and Summary. The bugnote full revision body remains secure.
Patches
- 71df1f67e05b2050cd4bd87839e6cc13747cf03f
Workarounds
None
Credits
Thanks to Vishal Shukla for discovering and responsibly reporting the issue.
- Record
GHSA-crmx-4p49-46m2- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200
- Updated
- 2026-11-02
NVD
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2.
- Record
CVE-2026-34970- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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 - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
MantisBT Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2.
- Record
CVE-2026-34970- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVGHSA-crmx-4p49-46m2
MantisBT: Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
MantisBT allows a bugnote author to access the note's Revisions page after losing access to the parent private issue.
Impact
Disclosure of the private Issue's Id and Summary. The bugnote full revision body remains secure.
Patches
- 71df1f67e05b2050cd4bd87839e6cc13747cf03f
Workarounds
None
Credits
Thanks to Vishal Shukla for discovering and responsibly reporting the issue.
- Record
GHSA-crmx-4p49-46m2- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mantisbt/mantisbtPackagist |
through 2.28.1 | 2.28.2 |
mantisbt/mantisbtPackagist |
before 2.28.2, plus listed versions 2.10.02.10.12.11.02.11.12.12.0 Show 45 moreShow less2.12.12.12.22.13.02.13.12.13.22.14.02.15.02.15.12.16.02.16.12.17.02.17.12.17.22.18.02.18.12.19.02.19.12.20.02.20.12.21.02.21.12.21.22.21.32.22.02.22.12.22.22.23.02.23.12.24.02.24.12.24.22.24.32.24.42.24.52.25.02.25.12.25.22.25.32.25.42.25.52.25.62.25.72.25.82.26.02.26.1 |
2.28.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-34970 is a medium vulnerability (CVSS 5.3) in Mantisbt, published May 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in mantisbt/mantisbt 2.28.2.
References
github.com/mantisbt/mantisbt/security/advisories/GHSA-crmx-4p49-46m2
mantisbt.org/bugs/view.php?id=36978
nvd.nist.gov/vuln/detail/CVE-2026-34970
Left out here: 26 versions. The JSON record has them.