CVE-2021-24637 json
Fonts Plugin < 3.0.3 - Contributor+ Stored Cross-Site Scripting
published 2021-09-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11549
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- fontsplugin fonts 3.0.3
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/dd2b3f22-5e8b-41cf-bcb8-d2e673e1d21e 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
- Unknown Fonts Plugin | Google Fonts Typography
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/dd2b3f22-5e8b-41cf-bcb8-d2e673e1d21e
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24637
- NVD CVE-2021-24637
Fencer Vulns 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.