The Google Fonts Typography WordPress plugin before 3.0.3 does not escape and sanitize 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.
CVE-2021-24637 is a medium severity with CVSS 5.4 Stored Cross-Site Scripting issue affecting the Plugin Fonts Plugin | Google Fonts, Adobe Fonts & Upload Fonts. It affects Versions before 3.0.3 and is fixed in 3.0.3.
Use the related hub and response guides to connect this CVE-2021-24637 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2021-24637 is tracked for the Plugin Fonts Plugin | Google Fonts, Adobe Fonts & Upload Fonts as medium severity with CVSS 5.4. The affected range is Versions before 3.0.3. Update Fonts Plugin | Google Fonts, Adobe Fonts & Upload Fonts to 3.0.3 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions before 3.0.3.
Confirm Fonts Plugin | Google Fonts, Adobe Fonts & Upload Fonts is updated to 3.0.3 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
olympus-google-fonts
View on wordpress.org
|
| CVE | CVE-2021-24637 |
| Patched Versions |
3.0.3
|
| Affected Versions |
Versions before 3.0.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Fonts <= 3.7.7 - Cross-Site Request Forgery
Fonts <= 3.7.7 - Missing Authorization
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