CVE-2026-40451 | THREATINT

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.

PUBLISHED Reserved 2026-04-13 | Published 2026-04-22 | Updated 2026-04-22 | Assigner jpcert

MEDIUM: 6.1CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

Cross-site scripting (XSS)

Product status

from v1.22.0 to v.1.23.0

affected

References

github.com/...ension/security/advisories/GHSA-4x2r-q3p9-xhx4

jvn.jp/en/jp/JVN37524771/

cve.org (CVE-2026-40451)

nvd.nist.gov (CVE-2026-40451)

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