CVE-2024-55638
Drupal core - Moderately critical - Gadget chain - SA-CORE-2024-008
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
9.8
Drupal core - Moderately critical - Gadget chain - SA-CORE-2024-008
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.
- Record
CVE-2024-55638- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-915
- Updated
- 2026-11-02
EUVDEUVD-2024-3473
9.8
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.
- Record
EUVD-2024-3473- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gvf2-2f4g-jqf4
7.5
Drupal core contains a potential PHP Object Injection vulnerability
Drupal core contains a potential PHP Object Injection vulnerability that (if combined with another exploit) could lead to Remote Code Execution. It is not directly exploitable.
This issue is mitigated by the fact that in order for it to be exploitable, a separate vulnerability must be present to allow an attacker to pass unsafe input to unserialize(). There are no such known exploits in Drupal core.
To help protect against this potential vulnerability, some additional checks have been added to Drupal core's database code. If you use a third-party database driver, check the release notes for additional configuration steps that may be required in certain cases.
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.
- Record
GHSA-gvf2-2f4g-jqf4- CVSS 4.0
- 7.5 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502, CWE-915
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6ccv-8fgf-cjpw No score
Drupal core Denial of Service vulnerability
The Comment module allows users to reply to comments. In certain cases, an attacker could make comment reply requests that would trigger a denial of service (DOS).
Sites that do not use the Comment module are not affected.
- Record
GHSA-6ccv-8fgf-cjpw- Updated
- 2026-11-02
NVD
9.8
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.
- Record
CVE-2024-55638- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-915, CWE-502
- Updated
- 2026-11-02
OSV
9.8
Drupal core - Moderately critical - Gadget chain - SA-CORE-2024-008
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.
- Record
CVE-2024-55638- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-915
- Updated
- 2026-11-02
Show 7 moreShow less
OSVGHSA-gvf2-2f4g-jqf4
7.5
Drupal core contains a potential PHP Object Injection vulnerability
Drupal core contains a potential PHP Object Injection vulnerability that (if combined with another exploit) could lead to Remote Code Execution. It is not directly exploitable.
This issue is mitigated by the fact that in order for it to be exploitable, a separate vulnerability must be present to allow an attacker to pass unsafe input to unserialize(). There are no such known exploits in Drupal core.
To help protect against this potential vulnerability, some additional checks have been added to Drupal core's database code. If you use a third-party database driver, check the release notes for additional configuration steps that may be required in certain cases.
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.
- Record
GHSA-gvf2-2f4g-jqf4- CVSS 4.0
- 7.5 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502, CWE-915
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2024-55638
9.8
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.
- Record
UBUNTU-CVE-2024-55638- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVBIT-drupal-2024-55638 No score
Drupal core - Moderately critical - Gadget chain - SA-CORE-2024-008
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.
- Record
BIT-drupal-2024-55638- Updated
- 2026-11-02
OSVCLSA-2026-1776214337 No score
TuxCare security update for drupal/core (11 CVEs)
TuxCare rebuilt drupal/core to address 11 CVEs. Fixed in 9.5.11-p1+tuxcare.
- Record
CLSA-2026-1776214337- Updated
- 2026-11-02
OSVCLSA-2026-1784682869 No score
TuxCare security update for drupal/core (21 CVEs)
TuxCare rebuilt drupal/core to address 21 CVEs. Fixed in 8.9.20-p1+tuxcare.
- Record
CLSA-2026-1784682869- Updated
- 2026-11-02
OSVDRUPAL-CORE-2024-008 No score
Drupal core contains a potential PHP Object Injection vulnerability that (if combined with another exploit) could lead to Remote Code Execution. It is not directly exploitable.
This issue is mitigated by the fact that in order for it to be exploitable, a separate vulnerability must be present to allow an attacker to pass unsafe input to unserialize(). There are no such known exploits in Drupal core.
To help protect against this potential vulnerability, some additional checks have been added to Drupal core's database code. If you use a third-party database driver, check the release notes for additional configuration steps that may be required in certain cases.
- Record
DRUPAL-CORE-2024-008- Updated
- 2026-11-02
OSVGHSA-6ccv-8fgf-cjpw No score
Drupal core Denial of Service vulnerability
The Comment module allows users to reply to comments. In certain cases, an attacker could make comment reply requests that would trigger a denial of service (DOS).
Sites that do not use the Comment module are not affected.
- Record
GHSA-6ccv-8fgf-cjpw- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/corePackagist |
8.0.0 up to 10.1.8 | 10.1.8 |
drupal/corePackagist |
10.2.0 up to 10.2.2 | 10.2.2 |
drupal/corePackagist |
8.8.0 up to 10.2.11 | 10.2.11 |
drupal/corePackagist |
10.3.0 up to 10.3.9 | 10.3.9 |
drupal/corePackagist |
7.0 up to 7.102 | 7.102 |
drupal/core-recommendedPackagist |
8.8.0 up to 10.2.11 | 10.2.11 |
drupal/core-recommendedPackagist |
10.3.0 up to 10.3.9 | 10.3.9 |
drupal/core-recommendedPackagist |
7.0 up to 7.102 | 7.102 |
drupal/drupalPackagist |
8.8.0 up to 10.2.11 | 10.2.11 |
drupal/drupalPackagist |
10.3.0 up to 10.3.9 | 10.3.9 |
Show 15 moreShow less
| Package | Affected | Fixed |
|---|---|---|
drupal/drupalPackagist |
7.0 up to 7.102 | 7.102 |
drupalBitnami |
7.0.0 up to 10.3.9 | 10.3.9 |
drupal/coreTuxCare:Packagist From an advisory covering 10 CVEs |
9.5.11 up to 9.5.11-p1+tuxcare | 9.5.11-p1+tuxcare |
drupal/coreTuxCare:Packagist From an advisory covering 20 CVEs |
8.9.20 up to 8.9.20-p1+tuxcare | 8.9.20-p1+tuxcare |
drupal/corePackagist |
8.0.0 up to 10.2.11, 10.3.0 up to 10.3.9, plus listed versions 10.0.010.0.0-alpha110.0.0-alpha210.0.0-alpha310.0.0-alpha4 Show 45 moreShow less10.0.0-alpha510.0.0-alpha610.0.0-alpha710.0.0-beta110.0.0-beta210.0.0-rc110.0.0-rc210.0.0-rc310.0.110.0.1010.0.1110.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.910.1.010.1.0-alpha110.1.0-beta110.1.0-rc110.1.110.1.210.1.310.1.410.1.510.1.610.1.710.1.810.2.010.2.0-alpha110.2.0-beta110.2.0-rc110.2.110.2.1010.2.210.2.310.2.410.2.510.2.610.2.710.2.810.2.9 |
10.2.1110.3.9 |
drupal/corePackagist |
8.0.0 up to 10.1.8, plus listed versions 10.0.010.0.0-alpha110.0.0-alpha210.0.0-alpha310.0.0-alpha4 Show 45 moreShow less10.0.0-alpha510.0.0-alpha610.0.0-alpha710.0.0-beta110.0.0-beta210.0.0-rc110.0.0-rc210.0.0-rc310.0.110.0.1010.0.1110.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.910.1.010.1.0-alpha110.1.0-beta110.1.0-rc110.1.110.1.210.1.310.1.410.1.510.1.610.1.78.0.18.0.28.0.38.0.48.0.58.0.68.1.08.1.0-beta18.1.0-beta28.1.0-rc18.1.18.1.108.1.28.1.38.1.4 |
10.1.8 |
drupal/corePackagist |
10.2.0 up to 10.2.2, plus listed versions 10.2.1 |
10.2.2 |
drupal/corePackagist |
8.8.0 up to 10.2.11, plus listed versions 10.0.010.0.0-alpha110.0.0-alpha210.0.0-alpha310.0.0-alpha4 Show 45 moreShow less10.0.0-alpha510.0.0-alpha610.0.0-alpha710.0.0-beta110.0.0-beta210.0.0-rc110.0.0-rc210.0.0-rc310.0.110.0.1010.0.1110.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.910.1.010.1.0-alpha110.1.0-beta110.1.0-rc110.1.110.1.210.1.310.1.410.1.510.1.610.1.710.1.810.2.010.2.0-alpha110.2.0-beta110.2.0-rc110.2.110.2.1010.2.210.2.310.2.410.2.510.2.610.2.710.2.810.2.9 |
10.2.11 |
drupal/corePackagist |
10.3.0 up to 10.3.9, plus listed versions 10.3.110.3.210.3.310.3.410.3.510.3.610.3.710.3.8 |
10.3.9 |
drupal/core-recommendedPackagist |
8.8.0 up to 10.2.11, plus listed versions 10.0.010.0.0-alpha110.0.0-alpha210.0.0-alpha310.0.0-alpha4 Show 45 moreShow less10.0.0-alpha510.0.0-alpha610.0.0-alpha710.0.0-beta110.0.0-beta210.0.0-rc110.0.0-rc210.0.0-rc310.0.110.0.1010.0.1110.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.910.1.010.1.0-alpha110.1.0-beta110.1.0-rc110.1.110.1.210.1.310.1.410.1.510.1.610.1.710.1.810.2.010.2.0-alpha110.2.0-beta110.2.0-rc110.2.110.2.1010.2.210.2.310.2.410.2.510.2.610.2.710.2.810.2.9 |
10.2.11 |
drupal/core-recommendedPackagist |
10.3.0 up to 10.3.9, plus listed versions 10.3.110.3.210.3.310.3.410.3.510.3.610.3.710.3.8 |
10.3.9 |
drupal/drupalPackagist |
8.8.0 up to 10.2.11, plus listed versions 10.0.010.0.0-alpha110.0.0-alpha210.0.0-alpha310.0.0-alpha4 Show 45 moreShow less10.0.0-alpha510.0.0-alpha610.0.0-alpha710.0.0-beta110.0.0-beta210.0.0-rc110.0.0-rc210.0.0-rc310.0.110.0.1010.0.1110.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.910.1.010.1.0-alpha110.1.0-beta110.1.0-rc110.1.110.1.210.1.310.1.410.1.510.1.610.1.710.1.810.2.010.2.0-alpha110.2.0-beta110.2.0-rc110.2.110.2.1010.2.210.2.310.2.410.2.510.2.610.2.710.2.810.2.9 |
10.2.11 |
drupal/drupalPackagist |
10.3.0 up to 10.3.9, plus listed versions 10.3.110.3.210.3.310.3.410.3.510.3.610.3.710.3.8 |
10.3.9 |
drupal7Ubuntu:Pro:14.04:LTS |
All versions, plus listed versions 7.23-17.24-17.24-27.26-17.26-1ubuntu0.17.26-1ubuntu0.1+esm17.26-1ubuntu0.1+esm27.26-1ubuntu0.1+esm3 |
None known |
drupal7Ubuntu:Pro:16.04:LTS |
All versions, plus listed versions 7.38-17.41-17.44-1ubuntu1~16.04.07.44-1ubuntu1~16.04.0+esm17.44-1ubuntu1~16.04.0+esm27.44-1ubuntu1~16.04.0+esm3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-55638 is a critical vulnerability (CVSS 9.8) in Drupal, published February 12, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.98%, the 62nd percentile. Fixed in drupal/core 10.1.8.
References
drupal.org/sa-core-2024-008
github.com/drupal/core/commit/2f76ac716ca8019bc60579fdfc8aa6cd65d57dff
github.com/drupal/core/commit/5e606b560ac4ecb08135f12b6165bbe0348346a0
github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/2024-01-17.yaml
drupal.org/sa-core-2024-001
github.com/advisories/GHSA-6ccv-8fgf-cjpw
Show 8 moreShow less
nvd.nist.gov/vuln/detail/CVE-2024-55638
github.com/advisories/GHSA-gvf2-2f4g-jqf4
git.drupalcode.org/project/drupal
drupal.org/project/drupal
github.com/CVEProject/cvelistV5/tree/main/cves/2024/55xxx/CVE-2024-55638.json
github.com/drupal/core
ubuntu.com/security/CVE-2024-55638
cve.org/CVERecord?id=CVE-2024-55638
Left out here: 1,097 versions. The JSON record has them.