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Fencer Intel
medium 5.4

CVE-2021-24322 json

Database Backup for WordPress < 2.4 - Authenticated Persistent Cross-Site Scripting (XSS)

published 5y ago modified 4mo ago also EUVD-2021-11236

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

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.

Patch / fix

  • deliciousbrains database_backup 2.4

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Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/6bea6301-0762-45c3-a4eb-15d6ac4f9f37 referenced PoC, tagged "exploit" by a source, unverified
  • m0ze.ru https://m0ze.ru/vulnerability/%5B2021-04-04%5D-%5BWordPress%5D-%5BCWE-79%5D-WP-DB-Backup-WordPress-Plugin-v2.3.3.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • Delicious Brains Database Backup for WordPress

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.