{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71415", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-06T16:28:51.181Z", "datePublished": "2026-08-31T20:46:02.280Z", "dateUpdated": "2026-09-03T18:02:09.849Z"}, "containers": {"cna": {"title": "Kirby: File upload permissions are not checked during processing of chunk data", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/getkirby/kirby/security/advisories/GHSA-67mx-6wf2-92xp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/getkirby/kirby/security/advisories/GHSA-67mx-6wf2-92xp"}, {"name": "https://github.com/getkirby/kirby/pull/8296", "tags": ["x_refsource_MISC"], "url": "https://github.com/getkirby/kirby/pull/8296"}, {"name": "https://github.com/getkirby/kirby/commit/37e206f3ed40ad3fab2e47e055ccb19e9c207dab", "tags": ["x_refsource_MISC"], "url": "https://github.com/getkirby/kirby/commit/37e206f3ed40ad3fab2e47e055ccb19e9c207dab"}, {"name": "https://github.com/getkirby/kirby/releases/tag/5.5.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/getkirby/kirby/releases/tag/5.5.2"}], "affected": [{"vendor": "getkirby", "product": "kirby", "versions": [{"version": ">= 5.0.0, < 5.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-31T20:46:02.280Z"}, "descriptions": [{"lang": "en", "value": "Kirby is an open-source content management system. From 5.0.0 until 5.5.2, Kirby's REST API chunk upload handler in src/Api/Upload.php did not run the relevant upload authorization preflight in Kirby\\Api\\Upload::process() before Kirby\\Api\\Upload::processChunk() persisted chunk data. An authenticated user with the access.panel permission enabled but with files.create, files.replace, and user/users.update permissions disabled could submit requests with an Upload-Length header and leave unfinished chunks in site/cache/.uploads for 24 hours. Repeating this process could consume attacker-controlled temporary storage, prevent other users from uploading files, or prevent site logic from storing data, although final permission checks still prevented unauthorized files from reaching the content or site/accounts directories. This issue is fixed in version 5.5.2."}], "source": {"advisory": "GHSA-67mx-6wf2-92xp", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-03T18:02:02.883589Z", "id": "CVE-2026-71415", "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": "2026-09-03T18:02:09.849Z"}}]}}

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