CVE-2021-23682: This affects the package litespeed.js before 0.3.12; the package appwrite/server-ce from 0.12.0 and before 0.1

This week

HIGH 7.3REMOTEUPGRADEUPGRADE

CVE-2021-23682 is a high-severity flaw (CVSS 7.3) affecting appwrite, litespeed.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-1321
Published	2022-02-16
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: appwrite · litespeed.js project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-02-16 17:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

appwrite appwrite UPGRADE

Affected: < 0.11.1 · >= 0.12.0 and < 0.12.2

Fixed in: 0.11.1, 0.12.2

Safe to downgrade to: a release before 0.12.0

1. Check installed version

apt-cache policy appwrite || rpm -q appwrite || appwrite --version

2. UPGRADE to 0.11.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade appwrite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade appwrite

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.12.0 (Debian / Ubuntu)

apt-cache madison appwrite sudo apt install appwrite=<VERSION_BEFORE_0.12.0> sudo apt-mark hold appwrite

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list appwrite sudo dnf downgrade appwrite-<VERSION_BEFORE_0.12.0> sudo dnf versionlock add appwrite

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

litespeed.js project litespeed.js UPGRADE

Affected: < 0.3.12

Fixed in: 0.3.12

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls litespeed.js

2. UPGRADE to 0.3.12

npm install litespeed.js@">=0.3.12"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-23682?

appwrite: upgrade to 0.11.1, 0.12.2; litespeed.js: upgrade to 0.3.12. Exact commands for each OS are on this page.

Is CVE-2021-23682 being exploited?

CVE-2021-23682 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-23682 affect?

CVE-2021-23682 affects appwrite, litespeed.js. Severity is high (CVSS 7.3). 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

How urgent is CVE-2021-23682?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-27159 HIGH 7.5 UPGRADE Appwrite up to v1.2.1 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /v1/ava
CVE-2024-1063 MEDIUM 5.3 UPGRADE Appwrite <= v1.4.13 is affected by a Server-Side Request Forgery (SSRF) via the '/v1/avatars/favicon' endpoint
CVE-2022-2925 MEDIUM 5.4 UPGRADE Cross-site Scripting (XSS) - Stored in GitHub repository appwrite/appwrite prior to 1.0.0-RC1.
CVE-2022-25377 HIGH 7.5 UPGRADE The ACME-challenge endpoint in Appwrite 0.5.0 through 0.12.x before 0.12.2 allows remote attackers to read arb

References

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