CVE-2026-15731

Description

The WP Multilang – Translation and Multilingual Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post content in all versions up to, and including, 2.4.31 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.

Overview

State: PUBLISHED
Assigner (CNA): Wordfence
CVSS severity: MEDIUM
CVSS score: 6.4 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Effective score: 6.4 / 10 MEDIUM source: CNA overview
CWE(s): CWE-79
Reserved: 2026-07-14
Published: 2026-09-24 09:27 UTC
Last updated: 2026-09-24 12:32 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/15xxx/CVE-2026-15731.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-24 10:17:36 UTC
NVD last modified: 2026-09-24 14:40:36 UTC
NVD CVSS v3.1: 6.4 / 10 MEDIUM source: security@wordfence.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Exploitability subscore: 3.1 / 10
Impact subscore: 2.7 / 10
EPSS score: 0.0025 (probability of exploitation in next 30 days)
EPSS percentile: 14.46% vs all CVEs — higher = more likely to be exploited, as of 2026-09-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85837
Assigner: Wordfence
Published: Sep 24, 2026, 9:27:44 AM
Updated: Sep 24, 2026, 12:32:12 PM
EUVD base score (CVSS 3.1): 6.4 / 10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EUVD-reported EPSS: 0.2500
Vendors: Magazine3
Products: WP Multilang – Translation and Multilingual Plugin (0 ≤2.4.31)
Aliases: GHSA-x9gx-wjjg-vc2r

ENISA description: The WP Multilang – Translation and Multilingual Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post content in all versions up to, and including, 2.4.31 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.

EUVD references (2)

Affected products (1)

Vendor	Product	Versions	Platforms
magazine3	WP Multilang – Translation and Multilingual Plugin	`0` (affected)	—

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://plugins.trac.wordpress.org/changeset/3637485/ security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/31c7b12c-eaab-405e-90da-3c5e8ab47245?source=cve security@wordfence.com

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-15731.json.

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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-24T12:31:51.518408Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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          "value": "Athiwat Tiprasaharn (Jitlada)"
        },
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          "value": "Itthidej Aramsri (Boeing777)"
        }
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