{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/64137?format=json","vulnerability_id":"VCID-nwfb-xnks-1kg7","summary":"glibc: glibc: Invalid DNS hostname returned via gethostbyaddr functions","aliases":[{"alias":"CVE-2026-4438"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/995126?format=json","purl":"pkg:deb/debian/glibc@2.36-8","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.36-8"},{"url":"http://public2.vulnerablecode.io/api/packages/1089418?format=json","purl":"pkg:deb/debian/glibc@2.36-9%2Bdeb12u14","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.36-9%252Bdeb12u14"},{"url":"http://public2.vulnerablecode.io/api/packages/1026161?format=json","purl":"pkg:deb/debian/glibc@2.40-5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.40-5"},{"url":"http://public2.vulnerablecode.io/api/packages/1089419?format=json","purl":"pkg:deb/debian/glibc@2.41-12%2Bdeb13u3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.41-12%252Bdeb13u3"},{"url":"http://public2.vulnerablecode.io/api/packages/1026163?format=json","purl":"pkg:deb/debian/glibc@2.42-10","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-10"},{"url":"http://public2.vulnerablecode.io/api/packages/1054641?format=json","purl":"pkg:deb/debian/glibc@2.42-14","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-us68-psx5-zude"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-14"},{"url":"http://public2.vulnerablecode.io/api/packages/923409?format=json","purl":"pkg:deb/debian/glibc@2.42-14?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-us68-psx5-zude"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-14%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1072619?format=json","purl":"pkg:deb/debian/glibc@2.42-15?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-15%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1104195?format=json","purl":"pkg:deb/debian/glibc@2.42-16?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-16%3Fdistro=trixie"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/923407?format=json","purl":"pkg:deb/debian/glibc@2.31-13%2Bdeb11u11?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-9nqp-tfvr-ayen"},{"vulnerability":"VCID-jswq-6ru6-wybc"},{"vulnerability":"VCID-kukb-s61t-pbc3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-ssnc-wdcf-sfc9"},{"vulnerability":"VCID-tcpv-4crc-zuap"},{"vulnerability":"VCID-us68-psx5-zude"},{"vulnerability":"VCID-zn6t-3mvb-wufm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.31-13%252Bdeb11u11%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/995125?format=json","purl":"pkg:deb/debian/glibc@2.31-13%2Bdeb11u11","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-9nqp-tfvr-ayen"},{"vulnerability":"VCID-d5xx-af6p-2fhn"},{"vulnerability":"VCID-jswq-6ru6-wybc"},{"vulnerability":"VCID-kukb-s61t-pbc3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-ssnc-wdcf-sfc9"},{"vulnerability":"VCID-tcpv-4crc-zuap"},{"vulnerability":"VCID-us68-psx5-zude"},{"vulnerability":"VCID-ys5d-7xgp-w7g5"},{"vulnerability":"VCID-zn6t-3mvb-wufm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.31-13%252Bdeb11u11"},{"url":"http://public2.vulnerablecode.io/api/packages/1026160?format=json","purl":"pkg:deb/debian/glibc@2.36-9%2Bdeb12u13","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-ssnc-wdcf-sfc9"},{"vulnerability":"VCID-tcpv-4crc-zuap"},{"vulnerability":"VCID-us68-psx5-zude"},{"vulnerability":"VCID-zn6t-3mvb-wufm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.36-9%252Bdeb12u13"},{"url":"http://public2.vulnerablecode.io/api/packages/923405?format=json","purl":"pkg:deb/debian/glibc@2.36-9%2Bdeb12u13?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-ssnc-wdcf-sfc9"},{"vulnerability":"VCID-tcpv-4crc-zuap"},{"vulnerability":"VCID-us68-psx5-zude"},{"vulnerability":"VCID-zn6t-3mvb-wufm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.36-9%252Bdeb12u13%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1026162?format=json","purl":"pkg:deb/debian/glibc@2.41-12%2Bdeb13u2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-us68-psx5-zude"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.41-12%252Bdeb13u2"},{"url":"http://public2.vulnerablecode.io/api/packages/923410?format=json","purl":"pkg:deb/debian/glibc@2.41-12%2Bdeb13u2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-us68-psx5-zude"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.41-12%252Bdeb13u2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/923408?format=json","purl":"pkg:deb/debian/glibc@2.42-13?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-13%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1054640?format=json","purl":"pkg:deb/debian/glibc@2.42-13","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-nwfb-xnks-1kg7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/glibc@2.42-13"},{"url":"http://public2.vulnerablecode.io/api/packages/1073033?format=json","purl":"pkg:rpm/redhat/glibc-main@2.42-11.1?arch=hum1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-3e43-r92j-hkd3"},{"vulnerability":"VCID-m4u2-dnhc-vugb"},{"vulnerability":"VCID-mt2t-g9ge-pfgz"},{"vulnerability":"VCID-nwfb-xnks-1kg7"},{"vulnerability":"VCID-ssnc-wdcf-sfc9"},{"vulnerability":"VCID-tcpv-4crc-zuap"},{"vulnerability":"VCID-zn6t-3mvb-wufm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/glibc-main@2.42-11.1%3Farch=hum1"}],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4438.json","reference_id":"","reference_type":"","scores":[{"value":"4.0","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4438.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4438","reference_id":"","reference_type":"","scores":[{"value":"0.00026","scoring_system":"epss","scoring_elements":"0.07359","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00026","scoring_system":"epss","scoring_elements":"0.07331","published_at":"2026-04-08T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08485","published_at":"2026-04-07T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08511","published_at":"2026-04-02T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08566","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00031","scoring_system":"epss","scoring_elements":"0.08605","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00031","scoring_system":"epss","scoring_elements":"0.08753","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00031","scoring_system":"epss","scoring_elements":"0.08731","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00031","scoring_system":"epss","scoring_elements":"0.08716","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00031","scoring_system":"epss","scoring_elements":"0.08593","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00033","scoring_system":"epss","scoring_elements":"0.09769","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00033","scoring_system":"epss","scoring_elements":"0.09736","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00033","scoring_system":"epss","scoring_elements":"0.09694","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00033","scoring_system":"epss","scoring_elements":"0.09727","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13895","published_at":"2026-05-12T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13993","published_at":"2026-05-15T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.1387","published_at":"2026-05-09T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13865","published_at":"2026-05-11T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13989","published_at":"2026-05-14T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13626","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00045","scoring_system":"epss","scoring_elements":"0.13782","published_at":"2026-05-07T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4438"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4438","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4438"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1131887","reference_id":"1131887","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1131887"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2449783","reference_id":"2449783","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2449783"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:7316","reference_id":"RHSA-2026:7316","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2026:7316"},{"reference_url":"https://sourceware.org/bugzilla/show_bug.cgi?id=34015","reference_id":"show_bug.cgi?id=34015","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-23T15:06:13Z/"}],"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=34015"}],"weaknesses":[{"cwe_id":838,"name":"Inappropriate Encoding for Output Context","description":"The product uses or specifies an encoding when generating output to a downstream component, but the specified encoding is not the same as the encoding that is expected by the downstream component."},{"cwe_id":20,"name":"Improper Input Validation","description":"The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly."}],"exploits":[],"severity_range_score":"4.0 - 5.4","exploitability":"0.5","weighted_severity":"3.6","risk_score":1.8,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-nwfb-xnks-1kg7"}