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CVE-2026-6366: Drupal core contains a chain of methods that could be exploitable when an insecure deserialization vulnerability exists

medium Affects drupal/core. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Drupal core contains a chain of methods that could be exploitable when an insecure deserialization vulnerability exists

Package
drupal/core Composer
Affected versions
>= 8.0.0 < 10.5.9 or >= 10.6.0 < 10.6.7 or >= 11.0.0 < 11.2.11 or >= 11.3.0 < 11.3.7 or >=8.0.0 and <10.5.9 or >=10.6.0 and <10.6.7 or >=11.0.0 and <11.2.11 or >=11.3.0 and <11.3.7
Fixed in
10.5.9, 10.6.7, 11.2.11, 11.3.7
Severity
medium  CVSS 6.6
Exploitation
not on CISA KEV · EPSS 0% (34.0th percentile)
Published
2026-04-15
Source
osv.dev

References

CWE-915
NVD recorddrupal/core advisories

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