CVE-2021-41086: jsuites is an open source collection of common required javascript web components

Q: How do I fix CVE-2021-41086?

jsuites: upgrade to 4.9.11. Exact commands for each OS are on this page.

Q: Is CVE-2021-41086 being exploited?

CVE-2021-41086 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-41086 affect?

CVE-2021-41086 affects jsuites. Severity is high (CVSS 8.7). jsuites is an open source collection of common required javascript web components. In affected versions users are subject to cross site scripting (XSS) attacks via clipboard content. jsuites is vulnerable to DOM based XSS if the user can be

This month

HIGH 8.7UPGRADE

CVE-2021-41086 is a high-severity flaw (CVSS 8.7) affecting jsuites. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

jsuites is an open source collection of common required javascript web components. In affected versions users are subject to cross site scripting (XSS) attacks via clipboard content. jsuites is vulnerable to DOM based XSS if the user can be tricked into copying _anything_ from a malicious and pasting it into the html editor. This is because a part of the clipboard content is directly written to `innerHTML` allowing for javascript injection and th

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-09-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: jsuites

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

Am I affected?

Timeline

2021-09-21 21:15 UTCPublished CVE record published
2026-06-17 04:07 UTCUpdated Record last modified

jsuites jsuites UPGRADE

Affected: < 4.9.11

Fixed in: 4.9.11

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.9.11 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jsuites

Note

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

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-2021-41086?

jsuites: upgrade to 4.9.11. Exact commands for each OS are on this page.

Is CVE-2021-41086 being exploited?

CVE-2021-41086 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-2021-41086 affect?

CVE-2021-41086 affects jsuites. Severity is high (CVSS 8.7). jsuites is an open source collection of common required javascript web components. In affected versions users are subject to cross site scripting (XSS) attacks via clipboard content. jsuites is vulnerable to DOM based XSS if the user can be

How urgent is CVE-2021-41086?

Priority 45/100. High severity

References

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