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CVE-2026-8209

MEDIUM
6.9
CVSS Score
Published: May 9, 2026 at 03:19 AM UTC
Updated: July 24, 2026 at 08:23 AM UTC
1 product affected across 1 vendorGibbon

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gibbon· Gibbonedu
60%
v < 30.0.01
Affected range stops below 30.0.01, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/GibbonEdu/core/releases/tag/v30.0.01
Exploit
Source: cverecord
https://projectblack.io/blog/gibbon-v30-authenticated-sql-injection-and-rce/#denial-of-service-via-path-traversal

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMPRJBLK
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-23

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