CVE-2025-53092

Strapi core vulnerable to sensitive data exposure via CORS misconfiguration

State: Published
Severity: 6.5 Medium
Published: Oct 16, 2025
Updated: Oct 16, 2025
Reserved: Jun 25, 2025

Description

Strapi is an open source headless content management system. Strapi versions prior to 5.20.0 contain a CORS misconfiguration vulnerability in default installations. By default, Strapi reflects the value of the Origin header back in the Access-Control-Allow-Origin response header without proper validation or whitelisting. This allows an attacker-controlled site to send credentialed requests to the Strapi backend. An attacker can exploit this by hosting a malicious site on a different origin (e.g., different port) and sending requests with credentials to the Strapi API. The vulnerability is fixed in version 5.20.0. No known workarounds exist.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-284 Improper Access Control
CWE-364 Signal Handler Race Condition
CWE-942 Permissive Cross-domain Policy with Untrusted Domains

Affected Products

Product	Versions
strapistrapi	< 5.20.0Affected

References

https://github.com/strapi/strapi/security/advisories/GHSA-9329-mxxw-qwf8

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