{"id":"CVE-2026-42150","aliases":["GHSA-gx2m-mcc2-r4p3","PYSEC-2026-2321"],"url":"https://o3.security/vulnerability/CVE-2026-42150","summary":"wlc: print_html outputs API data without HTML escaping, enabling stored XSS","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.","published":"2026-05-08T03:23:12.234Z","modified":"2026-08-12T03:51:32.663883959Z","cvss":{"score":5.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L"},"epss":{"score":0.00174,"percentile":0.0704,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"wlc","fixedVersion":"2.0.0"}],"fix":{"url":"https://github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469","label":"WeblateOrg/wlc@0f3e58f"},"references":[{"type":"WEB","url":"https://github.com/WeblateOrg/wlc/releases/tag/2.0.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42150.json"},{"type":"ADVISORY","url":"https://github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42150"},{"type":"FIX","url":"https://github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469"},{"type":"FIX","url":"https://github.com/WeblateOrg/wlc/pull/1327"},{"type":"PACKAGE","url":"https://github.com/WeblateOrg/wlc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:32.663883959Z"}}