Medium 5.3Published May 19, 2026

CVE-2026-34744MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues

Updated under an hour ago (Oct 26, 2026, 6:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for mantisbt

Exploited in the last 30 days

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior permit a user to list and download their own attachments from an Issue created by another user even after it becomes private, bypassing read access revocation. The loss of confidentiality caused by this vulnerability is minimal, considering that only attachments previously uploaded by the user themselves remain accessible. This issue has been fixed in version 2.82.2.

CVSS: 5.3 MEDIUM (v4.0, CNA)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): CWE-200, CWE-281
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: May 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

mantisbt mantisbt mantisbt:mantisbt (from the name)	before 2.28.2	CNA record

References

https://github.com/mantisbt/mantisbt/security/advisories/GHSA-rmp5-5jj7-gmvfx-refsource-confirm
https://github.com/mantisbt/mantisbt/commit/de7bdeec36de066235e38a77bf056917d951c84dx-refsource-misc
https://mantisbt.org/bugs/view.php?id=36977x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.