{"id":"CLEANSTART-2026-VO23255","summary":"ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label","details":"Multiple security vulnerabilities affect the metallb package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.","modified":"2026-09-18T12:17:57.344469196Z","published":"2026-09-10T01:16:37.857153Z","withdrawn":"2026-09-18T11:59:01.768079Z","upstream":["CVE-2025-47912","CVE-2025-58183","CVE-2025-58185","CVE-2025-58186","CVE-2025-58187","CVE-2025-58188","CVE-2025-58189","CVE-2025-61723","CVE-2025-61724","CVE-2025-61725","CVE-2025-61729","CVE-2026-33818","CVE-2026-39821","CVE-2026-41178","CVE-2026-46600","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","ghsa-gcjh-h69q-9w9g","ghsa-hrxh-6v49-42gf"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-VO23255.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-47912"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58183"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58185"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58186"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58187"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58188"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-58189"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-61723"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-61724"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-61725"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-61729"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-33818"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39821"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-41178"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46600"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56853"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56858"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56859"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56860"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56862"},{"type":"WEB","url":"https://osv.dev/vulnerability/ghsa-gcjh-h69q-9w9g"},{"type":"WEB","url":"https://osv.dev/vulnerability/ghsa-hrxh-6v49-42gf"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47912"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58183"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58185"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58186"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58187"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58188"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58189"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61723"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61724"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61725"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61729"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33818"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39821"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41178"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46600"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56853"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56858"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56859"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56860"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56862"}],"affected":[{"package":{"name":"metallb","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.0-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-VO23255.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}