Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-23682

32
FAUCET Score

CVE-2021-23682 is a critical Prototype Pollution vulnerability affecting litespeed.js before version 0.3.12 and Appwrite/server-ce versions 0.12.0 through 0.12.1. This flaw arises from improper sanitization of query string keys in the getJsonFromUrl function, allowing an attacker to manipulate object prototypes. With a CVSS score of 9.8, it poses a severe risk, enabling unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.11.1CPE matchmatch criteria
cpe:2.3:a:appwrite:appwrite:*:*:*:*:*:*:*:*
>= 0.12.0, < 0.12.2CPE matchmatch criteria
cpe:2.3:a:appwrite:appwrite:*:*:*:*:*:*:*:*
< 0.3.12CPE matchmatch criteria
cpe:2.3:a:litespeed.js_project:litespeed.js:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.12%
Probability of exploitation in next 30 days
EPSS Percentile
79.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0212 is in the 69th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: appwrite/server-ceFixed in: 0.12.2
composerpatch availablevia ghsa
Product: appwrite/server-ceFixed in: 0.11.1
github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: litespeed.jsFixed in: 0.3.12

Vendor Advisories (1)

npmGHSA-v9p9-535w-4285critical

Prototype Pollution in litespeed.js and appwrite/server-ce

Feb 17, 2022

References

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