DeepL Chrome browser extension versions from v1.22.0 to v.1.23.0 contain a cross-site scripting vulnerability, which allows an attacker to execute arbitrary script in a user's browser, and inject malicious HTML into web pages viewed by the user.
History

Wed, 22 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Deepl
Deepl chrome Browser Extension
Vendors & Products Deepl
Deepl chrome Browser Extension

Wed, 22 Apr 2026 07:30:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting in DeepL Chrome Extension Enables Arbitrary Script Execution

Wed, 22 Apr 2026 05:00:00 +0000

Type Values Removed Values Added
Description DeepL Chrome browser extension versions from v1.22.0 to v.1.23.0 contain a cross-site scripting vulnerability, which allows an attacker to execute arbitrary script in a user's browser, and inject malicious HTML into web pages viewed by the user.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 6.1, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2026-04-22T04:28:49.657Z

Updated: 2026-04-22T12:38:36.513Z

Reserved: 2026-04-13T06:27:03.647Z

Link: CVE-2026-40451

cve-icon Vulnrichment

Updated: 2026-04-22T12:38:18.649Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-22T05:16:23.253

Modified: 2026-04-22T21:23:52.620

Link: CVE-2026-40451

cve-icon Redhat

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