What is CVE-2026-41886?

CVE-2026-41886 is a high-severity vulnerability in Locize, classified under Cross-site Scripting. CVSS score: 7.5/10. Published 2026-05-08.

How severe is CVE-2026-41886?

High severity. CVSS v3 base score is 7.5 out of 10.

XSS in Locize

CVE-2026-41886

locize is a localization platform that connects code and i18n setup. Prior to version 4.0.21, the locize client SDK registers a window.addEventListener("message", …) handler that dispatches to registered internal handlers (editKey, commitK…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (4.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L.

Affected products

Locize — versions < 4.0.21

Weakness classification (CWE)

CWE-79 — Cross-site Scripting
CWE-346 — Origin Validation Error

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-41886?: CVE-2026-41886 is a high-severity vulnerability in Locize, classified under Cross-site Scripting. CVSS score: 7.5/10. Published 2026-05-08.
How severe is CVE-2026-41886?: High severity. CVSS v3 base score is 7.5 out of 10.