{"id":"CVE-2021-43862","aliases":["EUVD-2022-0739","GHSA-x9r5-jxvq-4387"],"status":"published","title":"Self XSS on user input","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).","severity":{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01071,"percentile":0.6512,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79","CWE-80"],"published":"2021-12-30T14:15:12Z","modified":"2026-10-20T10:55:05Z","fixes":[{"ecosystem":"npm","package":"jquery.terminal","fixed_in":["2.31.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"jquery.terminal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.31.1"}]}]},{"source":"osv","ecosystem":"npm","package":"jquery.terminal","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.31.1"}]}]}],"products":[{"vendor":"jcubic","product":"jquery.terminal"},{"vendor":"jquery.terminal_project","product":"jquery.terminal"}],"references":[{"url":"https://github.com/jcubic/jquery.terminal/security/advisories/GHSA-x9r5-jxvq-4387","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/jcubic/jquery.terminal/issues/727","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/jcubic/jquery.terminal/commit/77eb044d0896e990d48a9157f0bc6648f81a84b5","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/jcubic/jquery.terminal/releases/tag/2.31.1","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43862","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x9r5-jxvq-4387"},{"url":"https://github.com/jcubic/jquery.terminal","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-43862","title":"Self XSS on user input","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).","status":"published","published":"2021-12-30T14:15:12Z","modified":"2024-08-04T04:10:17.11Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2022-0739","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).","status":"published","published":"2021-12-30T14:15:12Z","modified":"2024-08-04T04:10:17Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T03:24:12.005069Z"}],"ghsa":[{"id":"GHSA-x9r5-jxvq-4387","title":"jquery.terminal self XSS on user input","description":"### Impact\nThis is low impact and limited XSS, because code for XSS payload is always visible, but attacker can use other techniques to hide the code the victim sees.\n\nAlso if the application use execHash option and execute code from URL the attacker can use this URL to execute his code. The scope is limited because the javascript code inside html attribute used is added to span tag, so no automatic execution like with `onerror` on images is possible.\n\n### Patches\nFixed version 2.31.1\n\n### Workarounds\nThe user can use formatting that wrap whole user input and it's no op.\n\n```javascript\n$.terminal.new_formatter([/([\\s\\S]+)/g, '[[;;]$1]']);\n```\nThe fix will only work when user of the library is not using different formatters (e.g. to highlight code in different way).\n\n### References\nThe issue was reported here [jcubic/jquery.terminal#727](https://github.com/jcubic/jquery.terminal/issues/727)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [jcubic/jquery.terminal](https://github.com/jcubic/jquery.terminal)\n* Email us at [jcubic@onet.pl](mailto:jcubic@onet.pl)\n","status":"published","published":"2022-01-06T22:48:56Z","modified":"2023-01-30T05:02:59Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-79","CWE-80"],"updated_at":"2026-11-02T14:36:28.424013Z"}],"nvd":[{"id":"CVE-2021-43862","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).","status":"published","published":"2021-12-30T15:15:07.47Z","modified":"2026-06-17T04:11:35.803Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:N/AC:H/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-80","CWE-79"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"CVE-2021-43862","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).","status":"published","published":"2021-12-30T15:15:07.47Z","modified":"2026-10-20T10:55:05.963345966Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.877444Z"},{"id":"GHSA-x9r5-jxvq-4387","title":"jquery.terminal self XSS on user input","description":"### Impact\nThis is low impact and limited XSS, because code for XSS payload is always visible, but attacker can use other techniques to hide the code the victim sees.\n\nAlso if the application use execHash option and execute code from URL the attacker can use this URL to execute his code. The scope is limited because the javascript code inside html attribute used is added to span tag, so no automatic execution like with `onerror` on images is possible.\n\n### Patches\nFixed version 2.31.1\n\n### Workarounds\nThe user can use formatting that wrap whole user input and it's no op.\n\n```javascript\n$.terminal.new_formatter([/([\\s\\S]+)/g, '[[;;]$1]']);\n```\nThe fix will only work when user of the library is not using different formatters (e.g. to highlight code in different way).\n\n### References\nThe issue was reported here [jcubic/jquery.terminal#727](https://github.com/jcubic/jquery.terminal/issues/727)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [jcubic/jquery.terminal](https://github.com/jcubic/jquery.terminal)\n* Email us at [jcubic@onet.pl](mailto:jcubic@onet.pl)\n","status":"published","published":"2022-01-06T22:48:56Z","modified":"2026-07-08T06:28:13.777334456Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-79","CWE-80"],"updated_at":"2026-11-02T15:46:59.835583Z"}]}}