Is CVE-2026-92919 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-92919 being exploited in the wild.

How severe is CVE-2026-92919?

High severity, with a CVSS score of 8.1, published 17 September 2026.

Is there a fix for CVE-2026-92919?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-92919 attacked?

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

Am I affected by CVE-2026-92919?

Check whether anything you run is named in the advisory. 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-2026-92919: admin3 path traversal write in file upload handler

CVE-2026-92919 · Severity: high · CVSS 8.1 · Published 2026-09-17

admin3 is a lightweight backend management framework written in Java/Spring Boot. The application's file upload feature fails to properly validate filenames, allowing authenticated users to write files to locations outside the intended storage directory on Windows systems. An attacker with valid credentials can exploit this to overwrite arbitrary files accessible to the server process, potentially leading to application compromise or data destruction.

Quick answers

Is CVE-2026-92919 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-92919 being exploited in the wild.
How severe is CVE-2026-92919?: High severity, with a CVSS score of 8.1, published 17 September 2026.
Which products and versions are affected?: admin3 admin3 through 3.0.0.
Is there a fix for CVE-2026-92919?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-92919 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-92919?: Check whether anything you run is named in the advisory. 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

The vulnerability is a path traversal flaw in the upload handler where client-supplied filenames are concatenated directly into the storage key without sanitization. The StorageServiceImpl generates a 5-character random prefix followed by the unsanitized filename; when this is resolved against the storage root using LocalStorage.store(), no containment check is performed. On Windows, attackers can use multiple dot-dot (..) path segments to escape the configured storage directory and reach parent directories. The 5-character prefix fuses with the first "..", requiring N+1 ".." groups to traverse N levels above the storage root. Exploitation requires valid authentication and is limited to Windows deployments; Linux systems fail due to per-component path resolution. An authenticated attacker can overwrite files with arbitrary content accessible to the server process, including application files or configuration.

Affected products

admin3 admin3 through 3.0.0

Timeline

2026-09-17: disclosed
other: CVE-2026-92919 assigned

References

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