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CVE-2021-24861: The Quotes Collection WordPress plugin through 2.5.2 does not validate and escape the bulkcheck parameter befo

48
This month
HIGH 7.2UPGRADE

CVE-2021-24861 is a high-severity flaw (CVSS 7.2) affecting quotes collection. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Quotes Collection WordPress plugin through 2.5.2 does not validate and escape the bulkcheck parameter before using it in a SQL statement, leading to a SQL injection

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score7.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance1.3% (top 29%)
CISA exploited listNo
WeaknessCWE-89
Published2021-12-13
Last modified2026-06-17
Publisher (CNA): WPScan · Vendor: quotes collection project

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

quotes collection project quotes collection UPGRADE
Affected: <= 2.5.2
Fixed in: newer than 2.5.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy quotes-collection || rpm -q quotes-collection || quotes-collection --version
2. UPGRADE to newer than 2.5.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade quotes-collection
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade quotes-collection
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24861?

quotes collection: upgrade to newer than 2.5.2. Exact commands for each OS are on this page.

Is CVE-2021-24861 being exploited?

CVE-2021-24861 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24861 affect?

CVE-2021-24861 affects quotes collection. Severity is high (CVSS 7.2). The Quotes Collection WordPress plugin through 2.5.2 does not validate and escape the bulkcheck parameter before using it in a SQL statement, leading to a SQL injection

How urgent is CVE-2021-24861?

Priority 48/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities

References

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