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Vulnerability record · CVE-2021-23682 · published 16 February 2022

CVE-2021-23682: Appwrite prototype pollution vulnerability

Appwrite · Appwrite

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.

9.8 CVSS 3.1 Critical EPSS 2.1% · top 18.9% CWE-1321 · Prototype pollution
9.8CVSS 3.1 base score, v2 7.5
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/appwrite/appwrite/pull/2778 PatchThird Party Advisory
https://github.com/appwrite/appwrite/releases/tag/0.11.1 Release NotesThird Party Advisory
https://github.com/appwrite/appwrite/releases/tag/0.12.2 Release NotesThird Party Advisory
https://github.com/litespeed-js/litespeed.js/pull/18 PatchThird Party Advisory
https://snyk.io/vuln/SNYK-JS-LITESPEEDJS-2359250 ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-PHP-APPWRITESERVERCE-2401820 ExploitThird Party Advisory
https://github.com/appwrite/appwrite/pull/2778 PatchThird Party Advisory
https://github.com/appwrite/appwrite/releases/tag/0.11.1 Release NotesThird Party Advisory
https://github.com/appwrite/appwrite/releases/tag/0.12.2 Release NotesThird Party Advisory
https://github.com/litespeed-js/litespeed.js/pull/18 PatchThird Party Advisory
https://snyk.io/vuln/SNYK-JS-LITESPEEDJS-2359250 ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-PHP-APPWRITESERVERCE-2401820 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2022-25377Appwrite path traversal vulnerabilityThe ACME-challenge endpoint in Appwrite 0.5.0 through 0.12.x before 0.12.2 allows remote attackers to read arbitrary local files via ../ directory tr…EPSS 0.79%7.5CVE-2024-1063Appwrite server-side request forgery (ssrf) vulnerabilityAppwrite <= v1.4.13 is affected by a Server-Side Request Forgery (SSRF) via the '/v1/avatars/favicon' endpoint due to an incomplete fix of CVE-2023-2…EPSS 0.45%7.5CVE-2023-27159Appwrite server-side request forgery (ssrf) vulnerabilityAppwrite up to v1.2.1 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /v1/avatars/favicon. This vulnerability allows…EPSS 36%5.4CVE-2022-2925Appwrite cross-site scripting vulnerabilityCross-site Scripting (XSS) - Stored in GitHub repository appwrite/appwrite prior to 1.0.0-RC1.EPSS 0.83%8.6CVE-2026-34621Adobe Acrobat Reader prototype pollution leads to code executionAdobe Acrobat and Reader (versions 24.001.30356, 26.001.21367 and earlier) are affected by prototype pollution (CWE-1321) that can result in arbitrar…KEVEPSS 2.2%analysed

Source: NIST National Vulnerability Database (record CVE-2021-23682), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.