CVE-2021-4340

uListing <= 1.6.6 - Unauthenticated SQL Injection

HIGH
7.5
CVSS Score
Published: June 7, 2023 at 01:51 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
2 products affected across 2 vendorsUlistingDirectory Listings WordPress plugin – uListing

Using Directory Listings WordPress plugin – uListing by stylemix?

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

The uListing plugin for WordPress is vulnerable to generic SQL Injection via the ‘listing_id’ parameter in versions up to, and including, 1.6.6 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v ≤ 1.6.6
v < 1.7
Affected range stops below 1.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-89

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