CVE-2026-57053

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-57053", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-06-23T16:40:22.560Z", "datePublished": "2026-06-23T16:40:22.947Z", "dateUpdated": "2026-06-23T17:40:14.173Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "libidn", "vendor": "GNU", "versions": [{"lessThan": "1.44", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "GNU libidn before 1.44 is prone to out-of-bounds reads of\u00a0uninitialized memory in the ToUnicode APIs because of mishandling in\u00a0idna_to_unicode_internal. The affected code is not present in libidn2."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1284", "description": "CWE-1284 Improper Validation of Specified Quantity in Input", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-06-23T16:40:22.947Z"}, "references": [{"url": "https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.html"}, {"url": "https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gnu:libidn:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.44"}]}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-23T17:40:08.293205Z", "id": "CVE-2026-57053", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-23T17:40:14.173Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-57053", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-06-23T16:40:22.560Z", "datePublished": "2026-06-23T16:40:22.947Z", "dateUpdated": "2026-06-23T17:40:14.173Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "libidn", "vendor": "GNU", "versions": [{"lessThan": "1.44", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "GNU libidn before 1.44 is prone to out-of-bounds reads of\u00a0uninitialized memory in the ToUnicode APIs because of mishandling in\u00a0idna_to_unicode_internal. The affected code is not present in libidn2."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1284", "description": "CWE-1284 Improper Validation of Specified Quantity in Input", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-06-23T16:40:22.947Z"}, "references": [{"url": "https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.html"}, {"url": "https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gnu:libidn:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.44"}]}]}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-57053", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-23T17:40:08.293205Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-23T17:40:10.988Z"}}]}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "libidn", "vendor": "GNU", "versions": [{"lessThan": "1.44", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnu:libidn:*:*:*:*:*:*:*:*", "matchCriteriaId": "118FD87F-26DE-4689-A179-D6A96321851E", "versionEndExcluding": "1.44", "versionStartIncluding": "0.1.15", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GNU libidn before 1.44 is prone to out-of-bounds reads of\u00a0uninitialized memory in the ToUnicode APIs because of mishandling in\u00a0idna_to_unicode_internal. The affected code is not present in libidn2."}, {"lang": "es", "value": "GNU libidn anterior a 1.44 es propenso a lecturas fuera de l\u00edmites de memoria no inicializada en las API ToUnicode debido a un manejo incorrecto en idna_to_unicode_internal. El c\u00f3digo afectado no est\u00e1 presente en libidn2."}], "id": "CVE-2026-57053", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 2.5, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 2.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57053", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-23T17:40:08.293205Z", "version": "2.0.3"}}]}, "published": "2026-06-23T18:18:10.827", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List"], "url": "https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1284"}], "source": "cve@mitre.org", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-1284"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.44)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "libidn", "source": "cna", "vendor": "GNU"}, "product": "libidn", "vendor": "gnu"}], "created": "2026-06-23T19:30:04.661918+00:00", "title": "Out-of-Bounds Read in GNU libidn ToUnicode APIs Leading to Information Disclosure", "updated": "2026-06-24T15:00:06.067556+00:00", "vendors": ["gnu", "gnu$PRODUCT$libidn"]}