How severe is CVE-2024-55638?

CVE-2024-55638 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-55638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-55638?

CVE-2024-55638 affects Drupal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-55638?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-55638 have an EU (EUVD) identifier?

Yes. CVE-2024-55638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3473.

When was CVE-2024-55638 published?

CVE-2024-55638 was published on 2024-12-10 and last updated on 2026-06-17.

CVE-2024-55638

CVE-2024-55638 is a critical-severity vulnerability in Drupal with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-3473
Weakness: CWE-502
Affected product: Drupal
Published: 2024-12-10
Last modified: 2026-06-17

Description

Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core: from 7.0 before 7.102, from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9. Drupal core contains a chain of methods that is exploitable when an insecure deserialization vulnerability exists on the site. This so-called gadget chain presents no direct threat but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability.

Frequently asked questions

What is CVE-2024-55638?: Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core: from 7.0 before 7.102, from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9. Drupal core contains a chain of methods that is exploitable when an insecure deserialization vulnerability exists on the site. This so-called gadget chain presents no direct threat but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability.
How severe is CVE-2024-55638?: CVE-2024-55638 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-55638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-55638?: CVE-2024-55638 affects Drupal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-55638?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-55638 have an EU (EUVD) identifier?: Yes. CVE-2024-55638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3473.
When was CVE-2024-55638 published?: CVE-2024-55638 was published on 2024-12-10 and last updated on 2026-06-17.

References

https://www.drupal.org/sa-core-2024-008

Affected products (1)

cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*

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