Vulnerability · Published Jun 21, 2021 · Assigned by GitHub_M
CVE-2021-21422XSS Vulnerability in mongo-express
High 8.1
In plain English
A high-severity cross-site scripting in mongo-express from mongo-express. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
mongo-express is a web-based MongoDB admin interface, written with Node.js and express. 1: As mentioned in this issue: https://github.com/mongo-express/mongo-express/issues/577, when the content of a cell grows larger than supported size, clicking on a row will show full document unescaped, however this needs admin interaction on cell. 2: Data cells identified as media will be rendered as media, without being sanitized. Example of different renders: image, audio, video, etc. As an example of type 1 attack, an unauthorized user who only can send a large amount of data in a field of a document may use a payload with embedded javascript. This could send an export of a collection to the attacker without even an admin knowing. Other types of attacks such as dropping a database\collection are possible.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | mongo-express | 1.0.0-alpha.4 | GHSA-7p8h-86p5-wv3p |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mongo-express | mongo-express | < v1.0.0-alpha.4 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N