CVE-2026-42150CWE-79

wlc: print_html outputs API data without HTML escaping, enabling stored XSS

Medium · published May 8, 2026

CVSS v3.1
5.1
EPSS
0%
Percentile
21.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00303 · 21.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-08T03:23Z
EPSS history
Timeline
  • 08 MAY 03:23Z
    wlc: print_html outputs API data without HTML escaping, enabling stored XSS
    cvelistv5