Prototype Pollution in Appwrite
CVE-2021-23682
This affects the package litespeed.js before 0.3.12; the package appwrite/server-ce from 0.12.0 and before 0.12.2, before 0.11.1. When parsing the query string in the getJsonFromUrl function, the key that is set in the result object is not properly sanitized leading to a Prototype Pollution vulnerability.
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.021 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Appwrite
- Litespeed.js Project
- Appwrite/server-Ce — versions 0.12.0, unspecified
- Litespeed.js — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-LITESPEEDJS-2359250 (Exploit, Third Party Advisory)
- snyk.io/vuln/SNYK-PHP-APPWRITESERVERCE-2401820 (Exploit, Third Party Advisory)
- github.com/litespeed-js/litespeed.js/pull/18 (Patch, Third Party Advisory)
- github.com/appwrite/appwrite/releases/tag/0.12.2 (Third Party Advisory, Release Notes)
- github.com/appwrite/appwrite/pull/2778 (Patch, Third Party Advisory)
- github.com/appwrite/appwrite/releases/tag/0.11.1 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-23682?
- CVE-2021-23682 is a high-severity vulnerability in Appwrite, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.3/10. Published 2022-02-16.
- How severe is CVE-2021-23682?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2021-23682 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.