CVE-2021-24861Network attack vector

Authenticated SQL injection via unescaped bulkcheck

Published Dec 13, 2021 · Updated Aug 3, 2024

SQL injection in Quotes Collection through 2.5.2 allows remote authenticated users to execute arbitrary SQL via the bulkcheck parameter. The plugin inserts bulkcheck into a SQL statement without validation or escaping, allowing crafted input to alter query semantics. Access requires an authenticated administrator-level WordPress account, and successful exploitation can read or modify database data and disrupt service.

CVSS severity7.2
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Quotes Collection through 2.5.2 allows remote authenticated users to execute arbitrary SQL via the bulkcheck parameter. The plugin inserts bulkcheck into a SQL statement without validation or escaping, allowing crafted input to alter query semantics. Access requires an authenticated administrator-level WordPress account, and successful exploitation can read or modify database data and disrupt service.

The record

CVE
CVE-2021-24861
Published
Dec 13, 2021
Updated
Aug 3, 2024
Vendor
Srini G
Product
Quotes Collection
Classifications
CWE-89, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.5.2 <=2.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Srini G · Quotes Collectionversion=2.5.2 <=2.5.2

Published CVSS scores

7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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