WPML Multilingual CMS <= 4.9.5 - Incorrect Authorization to Authenticated (Subscriber+) SQL Injection via ‘elementIds’ (CVE-2026-17509) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-17509

WPML Multilingual CMS <= 4.9.5 - Incorrect Authorization to Authenticated (Subscriber+) SQL Injection via ‘elementIds’

Answer in brief

CVE-2026-17509 records a Unknown severity vulnerability in WPML Multilingual CMS <= 4.9.5 - Incorrect Authorization to Authenticated (Subscriber+) SQL Injection via ‘elementIds’. The current sources do not mark it as known exploited. The current feed maps WPML/WPML Multilingual CMS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps WPML/WPML Multilingual CMS (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
WPML/WPML Multilingual CMSgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for WPML/WPML Multilingual CMS.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Upstream source description

The WPML Multilingual CMS plugin for WordPress is vulnerable to time-based SQL Injection via the ‘elementIds’ parameter in all versions up to, and including, 4.9.5 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This vulnerability is exploitable due to an authorization bypass where the registered authorization callback fails to execute, allowing any authenticated user regardless of role to access administrative translation functionalities.

Quoted source text, attributed separately from HOL analysis.