6.4Medium

CVE-2025-13731Nexter Extension <= 4.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

posimyththemes Nexter Extension – Security, Performance, Code Snippets & Site Toolkit Published: 2025-12-02 16:53 (11 months ago)

Description

The Nexter Extension – Site Enhancements Toolkit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'nxt-year' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Weakness (CWE): CWE-79

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
posimyththemes	Nexter Extension – Security, Performance, Code Snippets & Site Toolkit	≤ 4.4.1

References and patches

CVSS score

6.4Medium

Source: Wordfence · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

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

All scores (2)

cna	CVSS 3.1	6.4Medium
security@wordfence.com	CVSS 3.1	6.4Medium

EPSS (chance of exploitation in 30 days)

0.25%

higher than 16% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: partial

Timeline

ID reserved2025-11-26
Published2025-12-02 16:53
Reached IP-DB2026-10-24 23:57
Last updated2026-10-18 21:10

Assigned by (CNA): Wordfence
NVD status: Deferred

View at source: CVE.org · NVD

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