Strapi Vulnerable to SQL Injection in Content Type Builder

CVE Details

• Protection status: Protected by Atomicorp rules · About protection statuses
• CVE: CVE-2026-22599
• Name: Strapi Vulnerable to SQL Injection in Content Type Builder
• Severity: Critical
• CVSS: 9.3 (v4.0) (Critical)
• CVSS version: 4.0
• CVSS source: GitHub_M CNA
• CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • Attack vector: Network
  • Attack complexity: Low
  • Attack requirements: None
  • Privileges required: High
  • User interaction: None
  • Vulnerable-system confidentiality: High
  • Vulnerable-system integrity: High
  • Vulnerable-system availability: None
  • Subsequent-system confidentiality: High
  • Subsequent-system integrity: High
  • Subsequent-system availability: None
  • Safety: Not defined
• CWE: CWE-89
• Vendor: strapi
• Vulnerable product: strapi
• CVE published: 2026-05-14
• CVE last modified: 2026-10-26
• Affected versions (NVD configurations):
  • strapi: >= 4.0.0, < 4.26.1
  • strapi: >= 5.0.0, < 5.33.2
• EPSS: 0.0118; 67.4th percentile as of 2026-10-26 (FIRST (opens in a new tab) )
• Latest Update: 2026-10-27
• Selected Rule IDs observed: 340016 , 340017 , 340144 , 340145 , 340156 , 340157 , 341145 , 341245 , 360147 , 360148 , 380026 , 380122 , 390572
• Matching rules: 13; rules with blocking actions: 13
• Would-block Rule IDs: 340016 , 340017 , 340144 , 340145 , 340156 , 340157 , 341145 , 341245 , 360147 , 360148 , 380026 , 380122 , 390572
• Request surfaces inspected: JSON request data, Request URI, Request argument names, Request arguments, Request cookies, Request filename, Request headers, SOAP request data, XML request data

Vulnerability Description

Strapi is an open source headless content management system. In versions on the 4.x branch prior to 4.26.1 and on the 5.x branch prior to 5.33.2, a database-query injection vulnerability existed in the Strapi Content-Type Builder write API. An authenticated administrator could inject arbitrary database statements through the column.defaultTo attribute when creating or modifying a content type. Setting defaultTo as a tuple [value, { isRaw: true }] caused the value to be passed directly into Knex’s db.connection.raw() during schema migration without sanitization, allowing arbitrary statement execution at the database layer. Depending on the database engine, this enabled arbitrary file read via database utility functions, denial of service via forced server crash on schema-migration error, and on engines that permit external program execution, remote code execution against the database server. The patch in versions 4.26.1 and 5.33.2 addresses this by restricting all Content-Type Builder write APIs to development mode only. Production deployments running v5.33.2 or later return 404 for requests against /content-type-builder/content-types and related endpoints, removing the network-reachable attack surface entirely.

Recommended Actions

1. Maintain the observed Atomicorp protections. Keep your Atomicorp commercial rules current and confirm that the selected observed rules (340016 , 340017 , 340144 , 340145 , 340156 , 340157 , 341145 , 341245 , 360147 , 360148 , 380026 , 380122 , 390572 ) have not been locally disabled. Atomicorp commercial rules are enabled by default. If you use Atomic WAF, review the applicable policy and rule settings.

2. Apply the vendor’s remediation. WAF protection is defense in depth and does not replace upgrading or following the affected vendor’s guidance.

   • Affected versions: strapi version >= 5.0.0, < 5.33.2.
   • Affected versions: strapi version >= 4.0.0, < 4.26.1.
   • Affected versions: strapi @strapi/content-type-builder version >= 5.0.0, < 5.33.2.
   • Affected versions: strapi @strapi/content-type-builder version >= 4.0.0, < 4.26.1.
   • The CVE record does not include written upgrade or workaround instructions, but it does publish the following patch or mitigation reference:
     • Patch or mitigation information (opens in a new tab)
     • Patch or mitigation information (opens in a new tab)

3. Validate after changes. Confirm rule updates are current, review WAF events for the affected application, and test application behavior after vendor upgrades, mitigations, or local policy changes.

Research Notes

Atomicorp WAF protections are designed around attack techniques and exploit behaviors, allowing existing protections to apply across multiple vulnerabilities without requiring a unique rule for every CVE.

Public Vulnerability References

• NVD (opens in a new tab)
• CVE Record (opens in a new tab)
• Patch or mitigation: https://github.com/strapi/strapi/releases/tag/v4.26.1 (opens in a new tab)
• Patch or mitigation: https://github.com/strapi/strapi/releases/tag/v5.33.2 (opens in a new tab)
• Vendor advisory: https://github.com/strapi/strapi/security/advisories/GHSA-3xcq-8mjw-h6mx (opens in a new tab)

Test or Research Source

• Source: Atomicorp AI Research Framework
• Tags: cve, derived, sqli, waf-probe

Research Note Context

This research note documents exploit-technique analysis associated with this vulnerability and references Atomicorp WAF protections observed during engineering review, testing, or validation activities.

Atomicorp security controls are generally designed to identify and mitigate attack techniques and exploit behaviors rather than individual CVE identifiers. As a result, protections developed for one vulnerability may also apply to related attack variants and future vulnerabilities using similar techniques.

Learn More

Atomicorp develops commercially supported security technologies for web applications, servers, endpoints, workloads, and legacy enterprise platforms.

Organizations interested in protecting systems against exploit techniques associated with vulnerabilities such as this one can learn more about:

• Atomic ModSecurity Rules: commercially maintained WAF rules for ModSecurity deployments, including protections for web attacks, bots, scanners, malware, exploitation attempts, and emerging vulnerability classes.
• Atomic WAF: an enterprise web application firewall with Atomicorp rules, centralized management, reporting, authentication controls, and operational tooling.
• Atomic ModSecurity Integrator: a special licensing option for MSPs, MSSPs, OEMs, VARs, reverse proxy providers, and other integrators who want to incorporate Atomicorp ModSecurity rule technology into their own products or services.
• Atomic OSSEC: an enterprise OSSEC-based intrusion detection, compliance, and security monitoring platform.
• Atomic Protector: workload protection for Linux, web, cloud, data center, and hybrid environments.

For additional information, product evaluations, or technical discussions, visit https://www.atomicorp.com/ or https://modsecurity.io/ (opens in a new tab) .