---
title: "CVE-2026-114622: baserCMS - Path Traversal & Remote Code Execution"
description: "baserCMS 5.2.3 < 5.3.2 and 5.4.0 < 5.4.2 with BcThemeFile plugin contains a path traversal caused by improper validation and decoding order in ThemeFilesService and ThemeFileForm, letting authenticated administrators write and execute PHP files outside theme directory, exploit requires administrator session and same-origin Origin header."
url: https://panop.io/threat-heartbeat/CVE-2026-114622/
---

# CVE-2026-114622 baserCMS - Path Traversal & Remote Code Execution

baserCMS 5.2.3 < 5.3.2 and 5.4.0 < 5.4.2 with BcThemeFile plugin contains a path traversal caused by improper validation and decoding order in ThemeFilesService and ThemeFileForm, letting authenticated administrators write and execute PHP files outside theme directory, exploit requires administrator session and same-origin Origin header.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.66% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-114622)

## Details

Type

Path Traversal

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Published

23 October 2026

Updated

25 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to versions 5.3.2 or 5.4.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-114622](https://nvd.nist.gov/vuln/detail/CVE-2026-114622)
- [https://github.com/baserproject/basercms/releases/tag/5.4.2](https://github.com/baserproject/basercms/releases/tag/5.4.2)
- [https://github.com/baserproject/basercms/security/advisories/GHSA-q7g3-qwrc-mp89](https://github.com/baserproject/basercms/security/advisories/GHSA-q7g3-qwrc-mp89)
- [https://github.com/baserproject/basercms/commit/53ecf177dfb10eb1fb89c4b42d313983329aa162](https://github.com/baserproject/basercms/commit/53ecf177dfb10eb1fb89c4b42d313983329aa162)
- [https://github.com/baserproject/basercms/releases/tag/5.3.2](https://github.com/baserproject/basercms/releases/tag/5.3.2)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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