{
"id": "GHSA-gx2m-mcc2-r4p3",
"aliases": [
"CVE-2026-42150"
],
"details": "### Impact\nThe 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.\n\n\n### Patches\n* https://github.com/WeblateOrg/wlc/pull/1327\n\n### Workarounds\nThe only vulnerable code path is HTML output which is opt-in.\n\n### References\nWeblate thanks @fg0x0 for reporting this on GitHub.",
"summary": "wlc: print_html outputs API data without HTML escaping",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
]
}
],
"package": {
"name": "wlc",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-05-12T13:27:31Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L"
}
],
"published": "2026-04-24T20:43:30Z",
"references": [
{
"url": "https://github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42150",
"type": "ADVISORY"
},
{
"url": "https://github.com/WeblateOrg/wlc/pull/1327",
"type": "WEB"
},
{
"url": "https://github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469",
"type": "WEB"
},
{
"url": "https://github.com/WeblateOrg/wlc",
"type": "PACKAGE"
},
{
"url": "https://github.com/WeblateOrg/wlc/releases/tag/2.0.0",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-05-08T04:16:18Z",
"github_reviewed_at": "2026-04-24T20:43:30Z"
}
}