What is CVE-2021-24637?

CVE-2021-24637 is a medium-severity vulnerability in Fontsplugin Fonts, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-20.

How severe is CVE-2021-24637?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-24637 known to be exploited?

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

XSS in Fontsplugin Fonts

CVE-2021-24637

The Google Fonts Typography WordPress plugin before 3.0.3 does not escape and sanitise some of its block settings, allowing users with as role as low as Contributor to perform Stored Cross-Site Scripting attacks via blockType (combined with content), align, color, variant and fontID argument of a Gutenberg block.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Fontsplugin Fonts
Unknown Fonts Plugin | Google Typography — versions 3.0.3

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)

Frequently asked questions

What is CVE-2021-24637?: CVE-2021-24637 is a medium-severity vulnerability in Fontsplugin Fonts, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-20.
How severe is CVE-2021-24637?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-24637 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.