{"id":"CVE-2026-55567","state":"PUBLISHED","title":"BleachBit: Exploit File Delete to Escalate Privilege","description":"BleachBit cleans files to free disk space and to maintain privacy. Prior to 6.0.1, privileged Windows cleaning does not lock and validate a target's parent directory before deletion. A local unprivileged user can replace that directory with a Windows junction and use a native symlink to redirect the elevated deletion to an attacker-selected file. The arbitrary privileged file deletion can be combined with Windows Installer behavior to obtain local SYSTEM privileges. This issue is fixed in version 6.0.1.","publishedAt":"2026-09-21T14:23:42.014Z","updatedAt":"2026-09-21T15:16:03.499Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["bleachbit bleachbit"],"affected":[{"vendor":"bleachbit","product":"bleachbit","versions":[{"version":"< 6.0.1","status":"affected"}]}],"references":["https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94","https://github.com/bleachbit/bleachbit/pull/1774","https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0","https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1"],"weaknesses":["CWE-367"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55567.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55567","state":"PUBLISHED","datePublished":"2026-09-21T14:23:42.014Z","dateUpdated":"2026-09-21T15:16:03.499Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T23:11:20.214Z"},"containers":{"cna":{"title":"BleachBit: Exploit File Delete to Escalate Privilege","descriptions":[{"lang":"en","value":"BleachBit cleans files to free disk space and to maintain privacy. Prior to 6.0.1, privileged Windows cleaning does not lock and validate a target's parent directory before deletion. A local unprivileged user can replace that directory with a Windows junction and use a native symlink to redirect the elevated deletion to an attacker-selected file. The arbitrary privileged file deletion can be combined with Windows Installer behavior to obtain local SYSTEM privileges. This issue is fixed in version 6.0.1."}],"affected":[{"vendor":"bleachbit","product":"bleachbit","versions":[{"version":"< 6.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94","name":"https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/bleachbit/bleachbit/pull/1774","name":"https://github.com/bleachbit/bleachbit/pull/1774","tags":["x_refsource_MISC"]},{"url":"https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0","name":"https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0","tags":["x_refsource_MISC"]},{"url":"https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1","name":"https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","lang":"en","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-21T14:23:42.014Z"},"source":{"advisory":"GHSA-vcjw-px28-5w94","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T15:13:41.630098Z","id":"CVE-2026-55567","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T15:16:03.499Z"}}]}}}