CVE-2026-116113: GouGuOA Api.php chunkUpload unrestricted upload

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-26 · updated 2026-10-26
Weakness: CWE-284

Description

A security flaw has been discovered in GouGuOA up to 6.1.2. The impacted element is the function chunkUpload of the file app/disk/controller/Api.php. The manipulation of the argument file_extension results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

GouGuOA: 6.1.0, 6.1.1, 6.1.2

References

https://github.com/Gum29/rrrreeeeeeee-readme/blob/main/images/img/GouguOA-RCE-Standard-Vuln-Report-EN.md
https://vuldb.com/cve/CVE-2026-116113
https://vuldb.com/submit/1003776
https://vuldb.com/vuln/426181
https://vuldb.com/vuln/426181/cti

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