CVE-2021-43862

LOW

jQuery Terminal Emulator <2.31.1 - XSS

Title source: llm
STIX 2.1

Description

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 scope is limited because the javascript attribute used is added to span tag, so no automatic execution like with `onerror` on images is possible. This issue is fixed in version 2.31.1. As a workaround, the user can use formatting that wrap whole user input and its no op. The code for this workaround is available in the GitHub Security Advisory. The fix will only work when user of the library is not using different formatters (e.g. to highlight code in different way).

References (4)

Core 4
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/jcubic/jquery.terminal/security/advisories/GHSA-x9r5-jxvq-4387
Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/jcubic/jquery.terminal/issues/727
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/jcubic/jquery.terminal/releases/tag/2.31.1

Scores

CVSS v3 3.7
EPSS 0.0104
EPSS Percentile 59.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Details

CWE
CWE-80 CWE-79
Status published
Products (2)
jquery.terminal_project/jquery.terminal < 2.31.1
npm/jquery.terminal 0 - 2.31.1npm
Published Dec 30, 2021
Tracked Since Feb 18, 2026