{"id":"CLEANSTART-2026-NU76567","summary":"ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label","details":"CVE-2026-39821 affects multiple packages. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.","modified":"2026-10-31T16:04:21.031080337Z","published":"2026-10-31T13:29:03.915558Z","upstream":["CVE-2026-39821"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-NU76567.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39821"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39821"}],"affected":[{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.7-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.7-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.7-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"step-cli","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/step-cli"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.28.7-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"step-cli","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/step-cli"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.28.7-r4"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"etcd","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/etcd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.32-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"cosign-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/cosign-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"cosign-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/cosign-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"cosign-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/cosign-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.3-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"cosign-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/cosign-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"kyverno-policy-reporter-ui-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/kyverno-policy-reporter-ui-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"opentofu","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/opentofu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.13-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"coredns-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/coredns-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.7-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NU76567.json"}},{"package":{"name":"cosign-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/cosign-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6-r2"}]}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