CVE-2021-24404: The options.php file of the WP-Board WordPress plugin through 1.1 beta accepts a postid parameter which is not

Q: How do I fix CVE-2021-24404?

wp-board: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-24404 being exploited?

CVE-2021-24404 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24404 affect?

CVE-2021-24404 affects wp-board. Severity is high (CVSS 8.8). The options.php file of the WP-Board WordPress plugin through 1.1 beta accepts a postid parameter which is not sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection. This is a time based SQLI and in t

Q: How urgent is CVE-2021-24404?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2021-24404 is a high-severity flaw (CVSS 8.8) affecting wp-board. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The options.php file of the WP-Board WordPress plugin through 1.1 beta accepts a postid parameter which is not sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection. This is a time based SQLI and in the same function vulnerable parameter is passed twice so if we pass time as 5 seconds it takes 10 seconds to return since the query ran twice.

Why this priority

High severity
EPSS top 8%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	4.7% (top 8%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-09-20
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wp-board project

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

Am I affected?

Timeline

2021-09-20 10:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

wp-board project wp-board UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-board || rpm -q wp-board || wp-board --version

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-board

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-board

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-2021-24404?

wp-board: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2021-24404 being exploited?

CVE-2021-24404 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-2021-24404 affect?

CVE-2021-24404 affects wp-board. Severity is high (CVSS 8.8). The options.php file of the WP-Board WordPress plugin through 1.1 beta accepts a postid parameter which is not sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection. This is a time based SQLI and in t

How urgent is CVE-2021-24404?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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