CVE-2026-40451

MEDIUM

DeepL Chrome browser extension 1.22.0-1.23.0 - Cross-Site Scripting

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 6.1
EPSS 0.0017
EPSS Percentile 6.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
DeepL/Chrome browser extension from v1.22.0 to v.1.23.0
Published Apr 22, 2026
Tracked Since Apr 22, 2026