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PUBLISHED

2026-03-31 01:16

MODIFIED

2026-03-31 01:16

CVSS_SCORE V3

7.2

EPSS (Prob. Exploit)

1.07%

Top 35.0%

DATA SOURCES:

NVD 🔗 2026-03-31 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-01

> DESCRIPTION

baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR

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

EXPLOITABILITY

1.2

IMPACT

5.9

> MÉTRIQUES CVSS DÉTAILLÉES

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

Métrique	Valeur	Interprétation
AV (Vecteur d'Attaque) Attack Vector	Network (N)	Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque) Attack Complexity	Low (L)	Peu de conditions requises pour exploiter
PR (Privilèges Requis) Privileges Required	High (H)	Authentifié avec privilèges administratifs
UI (Interaction Utilisateur) User Interaction	None (N)	Aucune interaction utilisateur nécessaire
S (Périmètre) Scope	Unchanged (U)	Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité) Confidentiality Impact	High (H)	Divulgation totale d'informations
I (Impact Intégrité) Integrity Impact	High (H)	Modification totale des données possible
A (Impact Disponibilité) Availability Impact	High (H)	Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité

High

Divulgation totale d'informations

Intégrité

High

Modification totale des données possible

Disponibilité

High

Interruption totale du service possible

> WEAKNESSES

CWE-22 CWE-73

> CWE DETAILED DESCRIPTIONS

CWE-22: Improper Limitation of a Pathname to a Restricted Directory - The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. | CWE-73: External Control of File Name or Path - The product allows user input to control or influence paths or file names that are used in filesystem operations.

> GITHUB SECURITY ADVISORY

GHSA-c5c6-37vq-pjcq HIGH

baserCMS Path Traversal Leads to Arbitrary File Write and RCE via Theme File API

AFFECTED PACKAGES:

COMPOSER / baserproject/basercms

<= 5.2.2

Fixed in: 5.2.3

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE

AFFECTED PACKAGES:

Unknown / Unknown

72 versions affected

ALIASES:

GHSA-c5c6-37vq-pjcq

> HISTORIQUE DES MODIFICATIONS

Première apparition

31/03/2026 01:16

Source: NVD

📊 ENRICHISSEMENT 01/11/2026 06:59

CWE

Champ modifié: Description CWE

Ancienne valeur:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') - The product uses external input to construct a pathname that is intended to identify a file or directory that i...

Nouvelle valeur:

📊 ENRICHISSEMENT 01/04/2026 06:02

CWE

Champ modifié: Description CWE

Ancienne valeur:

N/A

Nouvelle valeur:

Total des modifications: 2 Dernière mise à jour: 1 week ago