{"id":"CVE-2026-63134","state":"PUBLISHED","title":"Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation","description":"Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive's secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue.","publishedAt":"2026-08-11T20:29:38.642Z","updatedAt":"2026-10-02T20:23:35.980Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","source":"icscert"},"assigner":"GitHub_M","products":["cisagov Malcolm"],"affected":[{"vendor":"cisagov","product":"Malcolm","defaultStatus":"unaffected","versions":[{"version":"< 26.07.0","status":"affected"},{"version":"26.07.0","status":"unaffected"}]}],"references":["https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","https://github.com/cisagov/Malcolm/releases/tag/v26.07.0","https://www.cisa.gov/news-events/ics-advisories/icsa-26-230-01","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-230-01.json"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63134.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63134","state":"PUBLISHED","datePublished":"2026-08-11T20:29:38.642Z","dateUpdated":"2026-10-02T20:23:35.980Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-15T16:54:55.817Z"},"containers":{"cna":{"title":"Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation","descriptions":[{"lang":"en","value":"Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive's secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue."}],"affected":[{"vendor":"cisagov","product":"Malcolm","defaultStatus":"unaffected","versions":[{"version":"< 26.07.0","status":"affected"},{"version":"26.07.0","status":"unaffected"}]}],"references":[{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","name":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/cisagov/Malcolm/releases/tag/v26.07.0","name":"https://github.com/cisagov/Malcolm/releases/tag/v26.07.0","tags":["x_refsource_MISC"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-230-01"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-230-01.json"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateUpdated":"2026-10-02T20:23:35.980Z"},"solutions":[{"lang":"en","value":"Malcolm version 26.07.0 addresses these issues. For more information, see  https://github.com/cisagov/Malcolm/pull/1043","supportingMedia":[{"type":"text/html","base64":false,"value":"Malcolm version 26.07.0 addresses these issues. For more information, see&nbsp;<a href=\"https://github.com/cisagov/Malcolm/pull/1043\">https://github.com/cisagov/Malcolm/pull/1043</a>"}]}],"credits":[{"lang":"en","value":"pavanchow reported this vulnerability to CISA.","type":"finder"}],"source":{"advisory":"GHSA-65mm-vgrw-vqx4","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T14:59:57.659002Z","id":"CVE-2026-63134","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T15:00:33.192Z"}}]}}}