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.

Impact Multi-translation download could write to an arbitrary location when instructed by a crafted server.

Patches https://github.com/WeblateOrg/wlc/pull/1128

Workarounds Do not use wlc download with untrusted servers.

References This issue was reported to us by wh1zee via HackerOne.

Impact Historically, wlc supported providing unscoped API keys in the setting. This practice was discouraged for years, but the code was never removed. This might cause the API key to be used against different server.

Patches https://github.com/WeblateOrg/wlc/pull/1098

Workarounds Remove unscoped key from wlc configuration. Only use URL-scoped keys in the [keys] sections.

References This issue was reported to us by wh1zee via HackerOne.

Impact The SSL verification would be skipped for some crafted URLs.

Patches https://github.com/WeblateOrg/wlc/pull/1097

Workarounds Avoid using untrusted wlc configurations, as that might cause insecure connections.

References This issue was reported to us by wh1zee via HackerOne.