> CVE-2026-4351 [HIGH]

« BACK_TO_HOME
PUBLISHED
2026-04-10 02:16
MODIFIED
2026-04-10 02:16
CVSS_SCORE V3
8.1
EPSS (Prob. Exploit)
0.53%
Top 56.2%
DATA SOURCES:
NVD 🔗 2026-04-10 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-28

> DESCRIPTION

The Perfmatters plugin for WordPress is vulnerable to arbitrary file overwrite via path traversal in all versions up to, and including, 2.5.9. This is due to the `PMCS::action_handler()` method processing the bulk action `activate`/`deactivate` handlers without any authorization check or nonce verification. The `$_GET['snippets'][]` values are passed unsanitized to `Snippet::activate()`/`Snippet::deactivate()` which call `Snippet::update()` then `file_put_contents()` with the traversed path. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite arbitrary files on the server with a fixed PHP docblock content, potentially causing denial of service by corrupting critical files like `.htaccess` or `index.php`.

> 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:L/UI:N/S:U/C:N/I:H/A:H
EXPLOITABILITY
2.8
IMPACT
5.2

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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
Low (L)
Authentifié avec compte utilisateur basique
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
None (N)
Aucune divulgation 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
None
Aucune divulgation d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-22

> 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.

> GITHUB SECURITY ADVISORY

GHSA-5m62-pw8w-7w9f CRITICAL

Apache Tomcat - Security constraints not correctly applied

AFFECTED PACKAGES:
MAVEN / org.apache.tomcat:tomcat-catalina
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat:tomcat-catalina
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat:tomcat-catalina
< 9.0.118
Fixed in: 9.0.118
MAVEN / org.apache.tomcat:tomcat
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat:tomcat
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat:tomcat
< 9.0.118
Fixed in: 9.0.118
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
< 9.0.118
Fixed in: 9.0.118

> HISTORIQUE DES MODIFICATIONS

Première apparition
10/04/2026 02:16
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:
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 underneat...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle 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...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://perfmatters.io/docs/changelog/
https://www.wordfence.com/threat-intel/vulnerabilities/id/c172ab2b-ce1f-4a0d-b31...
« BACK_TO_HOME