parse-server's session object properties can be updated by foreign user if object ID is known

Description

A foreign user can write to the session object of another user if the session object ID is known. For example, a foreign user can assign the session object to their own user by writing to the user field and then read any custom fields of that session object.

Recommendation

Update the parse-server package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 5.0.0, < 5.2.6

  < 4.10.15**

• Patched version(s): **5.2.6

  4.10.15**

References

• GHSA-6w4q-23cf-j9jp
• CVE-2022-39225
• CWE-276
• CWE-669
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Parse Server vulnerable to Prototype Pollution via Cloud Code Webhooks or Cloud Code Triggers - CVE-2022-41878
• Vega vulnerable to Cross-site Scripting via RegExp.prototype[@@replace] (GHSA-963h-3v39-3pqf) - CVE-2025-27793
• Parse Server before v3.4.1 vulnerable to Denial of Service - CVE-2019-1020012
• Parse Server has an OAuth login vulnerability - CVE-2025-30168

Tags:

npm

parse-server