CVE-2025-2918 json
Ultimate Blocks – WordPress Blocks Plugin <= 3.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets
published last yr. modified 4mo ago also EUVD-2025-17659
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 3.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Patch / fix
- dotcamp ultimate_blocks 3.3.4
Is CVE-2025-2918 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% 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 |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- ultimateblocks Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/41b2a4cc-fb23-41eb-b1a4-d793ae924d9a?source=cve
third-party-advisory
-
plugins.trac.wordpress.org
/browser/ultimate-blocks/tags/3.2.9/src/blocks/how-to/block.php#L335
product
-
plugins.trac.wordpress.org
/browser/ultimate-blocks/tags/3.2.9/src/blocks/content-filter/block.php#L14
product
-
plugins.trac.wordpress.org
/browser/ultimate-blocks/tags/3.2.9/src/blocks/tabbed-content/block.php#L136
product
-
plugins.trac.wordpress.org
/browser/ultimate-blocks/tags/3.2.9/src/blocks/content-toggle/block.php#L133
product
Sources
- CVE List CVE-2025-2918
- NVD CVE-2025-2918
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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.