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CVE-2026-42150

Medium

Description

wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0.

SeverityMedium
CVSS5.1
Exploit probability—
ProductWeblate Wlc
PublishedMay 8, 2026
First seenMay 8, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • weblate wlc2.0.0 or later
  • wlc2.0.0 or later

Affected products

ProductAffected versionsFixed in
weblate wlcv < 2.0.02.0.0
wlcPyPIv < 2.0.02.0.0

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