Medium severity · published May 9, 2026
CVE-2026-8209
Gibbon versions before v30.0.01 are affected by a path traversal vulnerability resulting in DOS by attempting extraction of web application PHP files, failed .zip extraction…
6.9
CVSS
0.3%
EPSS
No
On KEV
Description
Gibbon versions before v30.0.01 are affected by a path traversal vulnerability resulting in DOS by attempting extraction of web application PHP files, failed .zip extraction results in deletion of the file and a DOS condition. Successful exploitation requires Teacher or higher privileges. Exploitation could result in loss of availability of the web application.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
gibbon · gibbonedu
before 30.0.01 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8209
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8209
github.com
https://github.com/GibbonEdu/core/releases/tag/v30.0.01
projectblack.io
https://projectblack.io/blog/gibbon-v30-authenticated-sql-injection-and-rce/#denial-of-service-via-path-traversal
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