Information disclosure in MantisBT - CVE-2026-34970
Published: November 6, 2026
Vulnerability identifier: #VU159803
CSH Severity: Low
CVSS v4: 5.3 [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]
CVE-ID: CVE-2026-34970
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker with low privileges to read the identifier and summary of a private MantisBT issue.
The vulnerability exists due to insufficient enforcement of parent issue access restrictions on the bugnote Revisions page after access is revoked. A remote attacker with low privileges who previously authored a bugnote can open its Revisions page and obtain the private issue metadata.
Affected software
MantisBT
How to mitigate CVE-2026-34970
Install security update from vendor's website.
MantisBT - update to 2.28.2