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CVE-2026-55803— Drupal core - Critical - PHP object injection - SA-CORE-2026-005

Quick assessment

Affected
Drupal Drupal core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Drupal Drupal core是Drupal组织的内容管理系统。 Drupal core存在输入验证错误漏洞，该漏洞源于对动态确定对象属性的修改控制不当，可能导致对象注入。以下版本受到影响：0.0.0版本至10.5.12版本、10.6.0版本至10.6.11版本、11.2.0版本至11.2.14版本、11.3.0版本至11.3.12版本、0.0.0版本至11.0.版本和0.0.0版本至11.1.版本。

AI Predicted 9.8 Difficulty: Easy EPSS 0.35% · P27

Affected Version Matrix 6

VendorProduct Version RangeStatus
Drupal Drupal core 0.0.0< 10.5.12 affected
10.6.0< 10.6.11 affected
11.2.0< 11.2.14 affected
11.3.0< 11.3.12 affected
0.0.0< 11.0.* affected
0.0.0< 11.1.* affected
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I. Basic Information for CVE-2026-55803

Vulnerability Information
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Vulnerability Title
Drupal core - Critical - PHP object injection - SA-CORE-2026-005
Source: CVE Program / CVE List V5
Vulnerability Description
Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Vulnerability Title
Drupal core 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Drupal Drupal core是Drupal组织的内容管理系统。 Drupal core存在输入验证错误漏洞，该漏洞源于对动态确定对象属性的修改控制不当，可能导致对象注入。以下版本受到影响：0.0.0版本至10.5.12版本、10.6.0版本至10.6.11版本、11.2.0版本至11.2.14版本、11.3.0版本至11.3.12版本、0.0.0版本至11.0.*版本和0.0.0版本至11.1.*版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Drupal Drupal core 0.0.0 ~ 10.5.12 -

II. Public POCs for CVE-2026-55803

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III. Intelligence Information for CVE-2026-55803

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Vendor Advisories for CVE-2026-55803 (1)

Same Patch Batch · Drupal · 2026-07-10 · 46 CVEs total

CVE-2026-13232 Advanced Content Feedback (aka admin_feedback) - Moderately critical - Access bypass / Ins
CVE-2026-55806 Drupal core - Less critical - Cache poisoning and open redirect - SA-CORE-2026-007
CVE-2026-55809 Flag attendance field - Critical - PHP object injection - SA-CONTRIB-2026-049
CVE-2026-15087 Clean RESTful - Critical - Unsupported - SA-CONTRIB-2026-078
CVE-2026-15089 Commerce guest registration - Critical - Unsupported - SA-CONTRIB-2026-079
CVE-2026-11915 Brute force attack protection - Critical - Unsupported - SA-CONTRIB-2026-047
CVE-2026-11913 Mother May I - Critical - Unsupported - SA-CONTRIB-2026-045
CVE-2026-11914 Composer - Critical - Unsupported - SA-CONTRIB-2026-046
CVE-2026-15086 Raw Formatter [Meta Tag Formatter] - Critical - Unsupported - SA-CONTRIB-2026-077
CVE-2026-55808 Drupal core - Moderately critical - Improper validation - SA-CORE-2026-009
CVE-2026-55804 Drupal core - Moderately critical - Gadget chain - SA-CORE-2026-006
CVE-2026-13234 AI (Artificial Intelligence) - Moderately critical - Information Disclosure / Cross-site S
CVE-2026-13239 WissKI - Critical - Access bypass - SA-CONTRIB-2026-059
CVE-2026-13237 AI Agents - Moderately critical - Information disclosure, Access bypass - SA-CONTRIB-2026-
CVE-2026-13233 OpenAI Provider - Moderately critical - Server-side Request Forgery - SA-CONTRIB-2026-053
CVE-2026-13236 AI Agents - Less critical - Access bypass - SA-CONTRIB-2026-056
CVE-2026-13238 Commerce Realex / Global Payments - Moderately critical - Access Bypass - SA-CONTRIB-2026-
CVE-2026-13241 Paragraphs - Moderately critical - Access bypass - SA-CONTRIB-2026-061
CVE-2026-13240 Paragraphs - Less critical - Access bypass - SA-CONTRIB-2026-060
CVE-2026-13244 Tealium iQ Tag Management - Critical - PHP object injection - SA-CONTRIB-2026-064

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Drupal core
Same vendor: Drupal
Same weakness: CWE-915

V. Comments for CVE-2026-55803

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