CVE-2021-24322: The Database Backup for WordPress plugin before 2.4 did not escape the backup_recipient POST parameter in befo

Q: How do I fix CVE-2021-24322?

database backup: upgrade to 2.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-24322 being exploited?

CVE-2021-24322 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-2021-24322 affect?

CVE-2021-24322 affects database backup. Severity is medium (CVSS 5.4). The Database Backup for WordPress plugin before 2.4 did not escape the backup_recipient POST parameter in before output it back in the attribute of an HTML tag, leading to a Stored Cross-Site Scripting issue.

Q: How urgent is CVE-2021-24322?

Priority 37/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2021-24322 is a medium-severity flaw (CVSS 5.4) affecting database backup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Database Backup for WordPress plugin before 2.4 did not escape the backup_recipient POST parameter in before output it back in the attribute of an HTML tag, leading to a Stored Cross-Site Scripting issue.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-06-01
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: deliciousbrains

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

Am I affected?

Timeline

2021-06-01 14:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

deliciousbrains database backup UPGRADE

Affected: < 2.4

Fixed in: 2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy database-backup || rpm -q database-backup || database-backup --version

2. UPGRADE to 2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade database-backup

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade database-backup

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-2021-24322?

database backup: upgrade to 2.4. Exact commands for each OS are on this page.

Is CVE-2021-24322 being exploited?

CVE-2021-24322 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-2021-24322 affect?

CVE-2021-24322 affects database backup. Severity is medium (CVSS 5.4). The Database Backup for WordPress plugin before 2.4 did not escape the backup_recipient POST parameter in before output it back in the attribute of an HTML tag, leading to a Stored Cross-Site Scripting issue.

How urgent is CVE-2021-24322?

Priority 37/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2022-1577 MEDIUM 5.4 UPGRADE The Database Backup for WordPress plugin before 2.5.2 does not have CSRF check in place when updating the sche
CVE-2022-0255 HIGH 7.2 UPGRADE The Database Backup for WordPress plugin before 2.5.1 does not properly sanitise and escape the fragment param

References

← Back to latest CVEs