CVE-2026-114538
Bootstrap - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-236
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Bootstrap - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-236
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
- Record
CVE-2026-114538- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-79
- Updated
- 2026-11-06
EUVDEUVD-2026-113536
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
- Record
EUVD-2026-113536- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-3vq4-hp69-78xr
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 Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
- Record
GHSA-3vq4-hp69-78xr- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-79
- Updated
- 2026-11-06
NVD
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
- Record
CVE-2026-114538- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-79
- Updated
- 2026-11-06
OSVAZL-111526 No score
CVE-2026-114538 affecting package debootstrap 1.0.128+nmu2-1
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Bootstrap allows Cross-Site Scripting (XSS). This issue affects Bootstrap versions: from 0.0.0 to 3.45.0.
- Record
AZL-111526- Updated
- 2026-11-05
OSVDRUPAL-CONTRIB-2026-236 No score
Provides the Bootstrap front-end framework as a Drupal theme.
Bootstrap theme did not sufficiently filter certain attributes, which could lead to a cross-site scripting vulnerability.
This vulnerability is mitigated by only affecting the optional tooltip and popover features. A short-term mitigation is to disable tooltips and popovers on admin/appearance/settings/bootstrap or admin/appearance/settings/my_bootstrap_subtheme.
- Record
DRUPAL-CONTRIB-2026-236- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
debootstrapAzure Linux:3 |
through 1.0.128+nmu2-1 | None known |
drupal/bootstrapPackagist:https://packages.drupal.org/8 |
before 3.45.0 | 3.45.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| severity | CVE List, EUVD | |
| severity | GitHub Advisories | |
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-114538 is a high vulnerability (CVSS 7.1) in Bootstrap, published October 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in drupal/bootstrap 3.45.0.