Is CVE-2026-8209 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8209 being exploited in the wild.

How severe is CVE-2026-8209?

Informational severity, with a CVSS score of 6.9, published 9 May 2026.

Which products and versions are affected?

GibbonEdu Gibbon before v30.0.01.

Is there a fix for CVE-2026-8209?

A patch was published on 2026-02-06: Version v30.0.01 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-8209 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-8209?

Check whether you run GibbonEdu Gibbon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8209: Gibbon path traversal and denial of service in ZIP extraction

CVE-2026-8209 · Severity: info · CVSS 6.9 · Published 2026-05-09

Gibbon, an open-source school management platform, is affected by a security flaw in how it handles file extractions. An attacker with teacher-level access or higher can exploit this to delete critical application files, leading to a total service outage. This could disrupt school operations and prevent staff and students from accessing the system until it is manually restored.

Technologies: GibbonEdu Gibbon. Vendors: GibbonEdu.

Quick answers

Is CVE-2026-8209 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8209 being exploited in the wild.
How severe is CVE-2026-8209?: Informational severity, with a CVSS score of 6.9, published 9 May 2026.
Which products and versions are affected?: GibbonEdu Gibbon before v30.0.01.
Is there a fix for CVE-2026-8209?: A patch was published on 2026-02-06: Version v30.0.01 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-8209 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-8209?: Check whether you run GibbonEdu Gibbon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A path traversal vulnerability (CWE-23) exists in Gibbon's file handling logic, specifically within the report archiving or ZIP extraction features. An authenticated attacker with 'Teacher' or higher privileges can provide a manipulated path to target web application PHP files. If a .zip extraction fails or is manipulated via path traversal, the application may delete the targeted files, resulting in a Denial of Service (DoS) condition. The vulnerability is mitigated by the requirement for high-level authentication (Teacher/Admin) and a high attack complexity. The issue is addressed in version v30.0.01.

Affected products

GibbonEdu Gibbon before v30.0.01

Timeline

2026-02-06: patched: Version v30.0.01 released
2026-05-09: disclosed: CVE-2026-8209 published

References

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