Auth bypass in Gibbonedu Gibbon
CVE-2026-97864
A vulnerability has been found in GibbonEdu Gibbon up to 30.0.01. The affected element is the function makeBlock of the file modules/Planner/units_add_blockAjax.php of the component Unit Planner. The manipulation of the argument gibbonUnitBlockID/mode leads to missing authentication. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 31.0.00 is sufficient to fix this issue. The identifier of the patch is 07e719368eae8dfb4e22e19424ceab6074164ebc. It is recommended to upgrade the affected component.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Gibbonedu Gibbon — versions 30.0.01
Weakness classification (CWE)
References
- vuldb.com/vuln/409878 (technical-description, vdb-entry)
- vuldb.com/vuln/409878/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-97864 (third-party-advisory)
- vuldb.com/submit/911004 (third-party-advisory)
- github.com/GibbonEdu/core/pull/2090 (issue-tracking, patch)
- github.com/GibbonEdu/core/pull/2095 (issue-tracking, patch)
- github.com/GibbonEdu/core/commit/07e719368eae8dfb4e22e19424ceab6074164ebc (patch)
- github.com/GibbonEdu/core/compare/v31.0.00 (patch)
Frequently asked questions
- What is CVE-2026-97864?
- CVE-2026-97864 is a medium-severity vulnerability in Gibbonedu Gibbon, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-09-25.
- How severe is CVE-2026-97864?
- Medium severity. CVSS v3 base score is 5.3 out of 10.