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WPML Multilingual CMS CVE-2026-17509

| EUVDEUVD-2026-72698 MEDIUM
SQL Injection (CWE-89)
2026-09-08 Wordfence GHSA-6xgg-64gv-xp85
6.5
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
6.5 MEDIUM

Network-reachable with no complexity; PR:L reflects required Subscriber auth; C:H for full DB read; I:N and A:N as injection is read-only and blind.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Sep 08, 2026 - 12:20 vuln.today
CVE Published
Sep 08, 2026 - 11:30 cve.org
MEDIUM 6.5

DescriptionCVE.org

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.

AnalysisAI

Time-based blind SQL injection in the WPML Multilingual CMS WordPress plugin (all versions through 4.9.5) enables authenticated attackers with Subscriber-level access to exfiltrate sensitive database contents via the 'elementIds' parameter. The vulnerability is compounded by an authorization bypass: the plugin's registered authorization callback silently fails to execute, inadvertently granting any authenticated user - regardless of role - access to administrative translation endpoints that are intended to be admin-only. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid WordPress account of any role, including Subscriber (the lowest default role). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, score 6.5) accurately captures the risk profile: network-reachable, low complexity, but gated behind any form of authentication (Subscriber). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Update WPML Multilingual CMS to a version above 4.9.5 as soon as a patched release is confirmed via the vendor changelog at https://wpml.org/category/changelog/. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-17509 vulnerability details – vuln.today

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