PT-2026-34249 · Deepl · Chrome Browser Extension

Published 2026-04-22 · Updated 2026-04-22 · CVE-2026-40451

NVD

CVSS v3.1

6.1

Medium

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-40451

Affected Products

Chrome Browser Extension

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-40451 · Security Note
• https://github.com/DeepLcom/deepl-chrome-extension/security/advisories/GHSA-4x2r-q3p9-xhx4 · Note
• https://jvn.jp/en/jp/JVN37524771 · Note