CVE-2026-6650: Z-BlogPHP ZBA File app_upload.php UnPack unrestricted upload

Severity: medium (CVSS 4.7 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: 2026-04-20 · updated 2026-06-17
Weakness: CWE-284

Description

A vulnerability was identified in Z-BlogPHP 1.7.5. This affects the function App::UnPack of the file /zb_users/plugin/AppCentre/app_upload.php of the component ZBA File Handler. The manipulation leads to unrestricted upload. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Z-BlogPHP: 1.7.5

References

https://github.com/qingyun985/Cyber-Security/issues/3
https://vuldb.com/submit/793451
https://vuldb.com/vuln/358284
https://vuldb.com/vuln/358284/cti

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