{"api_version":"1","generated_at":"2026-05-06T09:55:50+00:00","cve":"CVE-2026-26157","urls":{"html":"https://cve.report/CVE-2026-26157","api":"https://cve.report/api/cve/CVE-2026-26157.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-26157","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-26157"},"summary":{"title":"Busybox: busybox: arbitrary file overwrite and potential code execution via incomplete path sanitization","description":"A flaw was found in BusyBox. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files.","state":"PUBLISHED","assigner":"redhat","published_at":"2026-02-11 21:16:21","updated_at":"2026-05-05 21:16:21"},"problem_types":["CWE-73","CWE-73 External Control of File Name or Path"],"metrics":[{"version":"3.1","source":"secalert@redhat.com","type":"Secondary","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb","name":"https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2439039","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2439039","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2026-26157","name":"https://access.redhat.com/security/cve/CVE-2026-26157","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:13831","name":"https://access.redhat.com/errata/RHSA-2026:13831","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-26157","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26157","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"Red Hat Hardened Images","version":"unaffected 1.37.0-7.2.hum1 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-02-11T17:54:52.728Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2026-02-11T00:00:00.000Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[{"source":"CNA","title":"","value":"As a prevention measure, avoid extracting archives from untrusted sources using BusyBox utilities. If extraction of untrusted archives is necessary, perform it within a highly isolated and restricted environment, such as a container with a read-only root filesystem and minimal privileges, to limit the potential impact of arbitrary file overwrites.","time":"","lang":"en"}],"exploits":[],"credits":[{"source":"CNA","value":"Red Hat would like to thank Calil Khalil (Hakal) for reporting this issue.","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"26157","cve":"CVE-2026-26157","epss":"0.001400000","percentile":"0.335830000","score_date":"2026-05-05","updated_at":"2026-05-06 00:08:09"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-26157","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-02-12T04:55:24.022631Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-02-26T14:44:23.512Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"busybox-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1.37.0-7.2.hum1","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"busybox","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}],"credits":[{"lang":"en","value":"Red Hat would like to thank Calil Khalil (Hakal) for reporting this issue."}],"datePublic":"2026-02-11T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in BusyBox. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-73","description":"External Control of File Name or Path","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-05T20:32:06.403Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"RHSA-2026:13831","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:13831"},{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-26157"},{"name":"RHBZ#2439039","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2439039"},{"url":"https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb"}],"timeline":[{"lang":"en","time":"2026-02-11T17:54:52.728Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-02-11T00:00:00.000Z","value":"Made public."}],"title":"Busybox: busybox: arbitrary file overwrite and potential code execution via incomplete path sanitization","workarounds":[{"lang":"en","value":"As a prevention measure, avoid extracting archives from untrusted sources using BusyBox utilities. If extraction of untrusted archives is necessary, perform it within a highly isolated and restricted environment, such as a container with a read-only root filesystem and minimal privileges, to limit the potential impact of arbitrary file overwrites."}],"x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-73: External Control of File Name or Path"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2026-26157","datePublished":"2026-02-11T20:27:06.196Z","dateReserved":"2026-02-11T17:05:41.991Z","dateUpdated":"2026-05-05T20:32:06.403Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-02-11 21:16:21","lastModifiedDate":"2026-05-05 21:16:21","problem_types":["CWE-73","CWE-73 External Control of File Name or Path"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"26157","Ordinal":"1","Title":"Busybox: busybox: arbitrary file overwrite and potential code ex","CVE":"CVE-2026-26157","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"26157","Ordinal":"1","NoteData":"A flaw was found in BusyBox. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files.","Type":"Description","Title":"Busybox: busybox: arbitrary file overwrite and potential code ex"}]}}}