CVE-2026-104762 json
Kadence Blocks <= 3.7.12 - Authenticated (Author+) Stored Cross-Site Scripting via Block Font Family Attribute
published 30d ago modified 27d ago also EUVD-2026-96107
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Block Font Family Attribute in all versions up to, and including, 3.7.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This encoding bypass is only triggered when the "Load Google Fonts Locally" site option (kadence_blocks_font_settings['load_fonts_local']) is enabled, which is not the default configuration.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 29d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/c5c83ab8-91d4-488e-903d-2a4b7f0dfe7d?source=cve
- plugins.trac.wordpress.org /browser/kadence-blocks/tags/3.7.12/includes/class-kadence-blocks-frontend.php#L379
- plugins.trac.wordpress.org /browser/kadence-blocks/tags/3.7.12/includes/class-kadence-blocks-frontend.php#L377
- plugins.trac.wordpress.org /browser/kadence-blocks/tags/3.7.12/includes/class-kadence-blocks-google-fonts.php#L152
- plugins.trac.wordpress.org /browser/kadence-blocks/tags/3.7.12/includes/class-kadence-blocks-css.php#L2516
- plugins.trac.wordpress.org /browser/kadence-blocks/tags/3.7.12/includes/class-kadence-blocks-css.php#L858
- plugins.trac.wordpress.org /changeset?reponame=&old=3731453%40kadence-blocks&new=3731453%40kadence-blocks
Sources
- CVE List CVE-2026-104762
- NVD CVE-2026-104762
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.