What is CVE-2021-24423?

CVE-2021-24423 is a medium-severity vulnerability in Updraftplus, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-01-24.

How severe is CVE-2021-24423?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-24423 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Updraftplus

CVE-2021-24423

The UpdraftPlus WordPress Backup Plugin WordPress plugin before 1.6.59 does not sanitise its updraft_service settings, allowing high privilege users to set malicious JavaScript payload in it and leading to a Stored Cross-Site Scripting issue

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (45.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Updraftplus
Unknown Updraftplus Wordpress Backup Plugin — versions 1.6.59

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)
contact@wpscan.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-24423?: CVE-2021-24423 is a medium-severity vulnerability in Updraftplus, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-01-24.
How severe is CVE-2021-24423?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-24423 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.