CVE-2021-43862: jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications

Q: How do I fix CVE-2021-43862?

jquery.terminal: upgrade to 2.31.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-43862 being exploited?

CVE-2021-43862 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-2021-43862 affect?

CVE-2021-43862 affects jquery.terminal. Severity is low (CVSS 3.7). jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. Versions prior to 2.31.1 contain a low impact and limited cross-site scripting (XSS) vulnerability. The code for XSS payload is always visible

Q: How urgent is CVE-2021-43862?

Priority 34/100. Public exploit reference

Routine

LOW 3.7UPGRADE

CVE-2021-43862 is a low-severity flaw (CVSS 3.7) affecting jquery.terminal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. Versions prior to 2.31.1 contain a low impact and limited cross-site scripting (XSS) vulnerability. The code for XSS payload is always visible, but an attacker can use other techniques to hide the code the victim sees. If the application uses the `execHash` option and executes code from URL, the attacker can use this URL to execute their code. The sc

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-80, CWE-79
Published	2021-12-30
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: jquery.terminal project

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

Am I affected?

Timeline

2021-12-30 15:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

jquery.terminal project jquery.terminal UPGRADE

Affected: < 2.31.1

Fixed in: 2.31.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jquery.terminal || rpm -q jquery.terminal || jquery.terminal --version

2. UPGRADE to 2.31.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jquery.terminal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jquery.terminal

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-2021-43862?

jquery.terminal: upgrade to 2.31.1. Exact commands for each OS are on this page.

Is CVE-2021-43862 being exploited?

CVE-2021-43862 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-2021-43862 affect?

CVE-2021-43862 affects jquery.terminal. Severity is low (CVSS 3.7). jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. Versions prior to 2.31.1 contain a low impact and limited cross-site scripting (XSS) vulnerability. The code for XSS payload is always visible

How urgent is CVE-2021-43862?

Priority 34/100. Public exploit reference

Software pages

jQuery vulnerabilities

References

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