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Vulnerability details: VCID-2s8m-ujzb-skd1
Vulnerability ID VCID-2s8m-ujzb-skd1
Aliases CVE-2024-55637
GHSA-w6rx-9g2x-mg5g
Summary 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, types have been added to properties in some of Drupal core's classes. If an application extends those classes, the same types may need to be specified on the subclass to avoid a `TypeError`. This issue affects Drupal Core: from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9, from 11.0.0 before 11.0.8.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-502 Deserialization of Untrusted Data
CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
epss 0.07606 https://api.first.org/data/v1/epss?cve=CVE-2024-55637
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-w6rx-9g2x-mg5g
cvssv3.1 9.8 https://github.com/drupal/core
cvssv4 7.5 https://github.com/drupal/core
generic_textual HIGH https://github.com/drupal/core
cvssv3.1 9.8 https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
cvssv4 7.5 https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
generic_textual HIGH https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2024-55637
cvssv4 7.5 https://nvd.nist.gov/vuln/detail/CVE-2024-55637
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2024-55637
cvssv3.1 9.8 https://www.drupal.org/sa-core-2024-007
cvssv4 7.5 https://www.drupal.org/sa-core-2024-007
generic_textual HIGH https://www.drupal.org/sa-core-2024-007
ssvc Track https://www.drupal.org/sa-core-2024-007
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2024-55637
https://github.com/drupal/core
https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
https://nvd.nist.gov/vuln/detail/CVE-2024-55637
https://www.drupal.org/sa-core-2024-007
GHSA-w6rx-9g2x-mg5g https://github.com/advisories/GHSA-w6rx-9g2x-mg5g
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/drupal/core
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://github.com/drupal/core
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

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none

high

low

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://github.com/drupal/core/commit/1664030d399c73b4144f410f2ccc68c66a947f8d
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

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low

none

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low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2024-55637
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://nvd.nist.gov/vuln/detail/CVE-2024-55637
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.drupal.org/sa-core-2024-007
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://www.drupal.org/sa-core-2024-007
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-10T21:20:25Z/ Found at https://www.drupal.org/sa-core-2024-007
Exploit Prediction Scoring System (EPSS)
Percentile 0.91823
EPSS Score 0.07606
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:50:10.644754+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-w6rx-9g2x-mg5g/GHSA-w6rx-9g2x-mg5g.json 38.0.0