Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
Unauthenticated remote SQLi (AV:N/AC:L/PR:N/UI:N) with high DB read impact (C:H); I set S:U as injection stays within the WordPress DB authority, with minor I/A per Patchstack.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in JoinWebs Classiera allows SQL Injection. This issue affects Classiera: from n/a through 4.0.34.
AnalysisAI
SQL injection in the Classiera WordPress classified-ads theme (all versions up to and including 4.0.34) lets remote attackers inject arbitrary SQL through an unauthenticated request path, per the Patchstack advisory that reported it. Because the CVSS vector specifies PR:N and a changed scope, an attacker can reach backend database content without credentials, exposing sensitive data across the WordPress installation. No public exploit has been identified and EPSS is very low (0.05%), indicating no observed weaponization at time of analysis.
Technical ContextAI
The affected component is Classiera, a commercial classified-ads theme for the WordPress CMS (PHP/MySQL stack). The root cause is CWE-89, Improper Neutralization of Special Elements used in an SQL Command: user-controlled input is concatenated into a database query without adequate parameterization or sanitization, so crafted values alter the intended query structure. WordPress themes commonly expose this class of flaw through custom AJAX handlers, search/filter parameters, or listing-query endpoints that call $wpdb without prepared statements. The scope-changed CVSS metric (S:C) reflects that the injected query can reach data beyond the vulnerable component's own security authority - i.e., the shared WordPress database serving the whole site.
RemediationAI
No vendor-released patch version is identified in the available data; the disclosure covers everything up to and including 4.0.34, so administrators should monitor JoinWebs/Patchstack for a release above 4.0.34 and upgrade to it as soon as it is published (consult https://patchstack.com/database/wordpress/theme/classiera/vulnerability/wordpress-classiera-4-0-34-sql-injection-vulnerability for the fix status). Until a patched theme version is available, apply virtual patching / a WAF rule (Patchstack and comparable WordPress firewalls offer vPatch coverage for this CVE) to block SQL-injection payloads to the theme's vulnerable parameters; the trade-off is that WAF rules can be bypassed and may false-positive on legitimate search queries. As additional compensating controls, restrict the affected listing/search endpoints where feasible, enforce least-privilege on the WordPress database user to limit what a successful injection can read, and enable query logging to detect exploitation attempts - these reduce blast radius but do not close the flaw.
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Same weakness CWE-89 – SQL Injection
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External POC / Exploit Code
Leaving vuln.today
EUVD-2025-19293