CVE-2026-97864 GibbonEdu Gibbon Unit Planner units_add_blockAjax.php makeBlock missing authentication
Remote attackers can modify unit planner blocks without authentication due to missing checks in the makeBlock function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-97864?
CVE-2026-97864 is a medium-severity missing authorization vulnerability in GibbonEdu Gibbon, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-97864?
How do I fix CVE-2026-97864?
No fix has been published for CVE-2026-97864 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-97864 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-97864 exists.
Sources
Also known as GHSA-whgc-w9f2-pcrv.