CVE-2025-3902 json
Block Class - Moderately critical - Cross Site Scripting - SA-CONTRIB-2025-043
published last yr. modified last mo. also DRUPAL-CONTRIB-2025-043 , EUVD-2025-12162
- cvss
- 6.1
- 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 16%
- public exploits
- 0
- none known
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Block Class allows Cross-Site Scripting (XSS).This issue affects Block Class: from 4.0.0 before 4.0.1.
Patch / fix
- packagist drupal/block_class 4.0.1
- Drupal Block Class 4.0.1
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | drupal/block_class | >=4.0.0, <4.0.1 |
4.0.1 |
Affected products
- Drupal Block Class
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
drupal.org
/sa-contrib-2025-043
vendor-advisory, web
Sources
- CVE List CVE-2025-3902
- NVD CVE-2025-3902
- OSV DRUPAL-CONTRIB-2025-043
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.