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CVE-2026-55805: The Layout Builder module doesn't sufficiently sanitize block labels in certain scenarios, which can lead to a cross-sit

unknown Affects drupal/core. Feed 2026.10.29.4, updated 2026-10-29; published .

The Layout Builder module doesn't sufficiently sanitize block labels in certain scenarios, which can lead to a cross-sit

Package
drupal/core Composer
Affected versions
<10.6.13 or >=11.3.0 <11.3.14 or >=11.4.0 <11.4.4 or 11.0.* or 11.1.* or 11.2.*
Fixed in
10.6.13, 11.3.14, 11.4.4
Severity
unknown
Exploitation
not on CISA KEV · EPSS 0% (13.3th percentile)
Published
2026-07-15
Source
osv.dev

References

NVD recorddrupal/core advisories

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