CVE-2026-84915
Component blocks - Moderately critical - Cross site scripting - SA-CONTRIB-2026-123
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Component blocks - Moderately critical - Cross site scripting - SA-CONTRIB-2026-123
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
- Record
CVE-2026-84915- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-107876
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
- Record
EUVD-2026-107876- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xf3c-7v88-48w2
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")...
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
- Record
GHSA-xf3c-7v88-48w2- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
- Record
CVE-2026-84915- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Component blocks - Moderately critical - Cross site scripting - SA-CONTRIB-2026-123
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Component blocks allows Stored XSS. This issue affects Component blocks versions: from 0.0.0 to 1.2.7.
- Record
CVE-2026-84915- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVDRUPAL-CONTRIB-2026-123No score
This module enables you use UI Patterns with blocks, for use in Layout Builder.
The module doesn't sufficiently validate user input before passing to token replacement.
This vulnerability is mitigated by the fact that an attacker must have a role with the ability to edit layout builder layouts.
- Record
DRUPAL-CONTRIB-2026-123- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/component_blocksPackagist:https://packages.drupal.org/8 | before 1.2.7 | 1.2.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-84915 is a medium vulnerability (CVSS 4.6) in Drupal Component Blocks, published September 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in drupal/component_blocks 1.2.7.