Vulnerability · Published May 19, 2026 · Assigned by GitHub_M
CVE-2026-34970MantisBT Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked
Medium 5.3
In plain English
A medium-severity information exposure in mantisbt from mantisbt. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.4%top 68.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | mantisbt/mantisbt | 2.28.2 | GHSA-crmx-4p49-46m2 |
Affected products (as reported)
Weakness: CWE-200 · Vector: 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
References
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-crmx-4p49-46m2 x_refsource_CONFIRM
- https://github.com/mantisbt/mantisbt/commit/71df1f67e05b2050cd4bd87839e6cc13747cf03f x_refsource_MISC
- https://mantisbt.org/bugs/view.php?id=36978 x_refsource_MISC