PT-2026-39878 · Git+2 · Mantisbt+1

Shukla304 · CVE-2026-34754 · Published 2026-05-11 · Updated 2026-05-20

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Mantis Bug Tracker (MantisBT) versions prior to 2.28.2

Description An authenticated user can upload attachments to private issues that they are not authorized to access.

Recommendations Update to version 2.28.2.

Exploit

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-34754

GHSA-H4X5-GVX6-3RWC

Affected Products

Mantisbt

Mantisbt/Mantisbt

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34754.json · Exploit
• https://osv.dev/vulnerability/GHSA-h4x5-gvx6-3rwc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-34754 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34754 · Security Note
• https://github.com/mantisbt/mantisbt · Note
• https://github.com/mantisbt/mantisbt/security/advisories/GHSA-h4x5-gvx6-3rwc · Note
• https://github.com/mantisbt/mantisbt/commit/b262b4d2835b81394d75356dead66e52a6275206 · Note
• https://mantisbt.org/bugs/view.php?id=36976 · Note