CVE-2026-49453

{"id": "CVE-2026-49453", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49453", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-22T13:31:17.285182Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 2.2}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "laurent22", "product": "joplin", "versions": [{"status": "affected", "version": "< 3.6.15"}, {"status": "affected", "version": ">= 3.7.0, < 3.7.2"}]}]}], "published": "2026-09-21T21:17:03.900", "references": [{"url": "https://github.com/laurent22/joplin/commit/18e0b08c282c89ae51612c4eff67af2a45ff5163", "source": "security-advisories@github.com"}, {"url": "https://github.com/laurent22/joplin/commit/50518073740c4501058e366300b42c2f1925cb05", "source": "security-advisories@github.com"}, {"url": "https://github.com/laurent22/joplin/pull/15540", "source": "security-advisories@github.com"}, {"url": "https://github.com/laurent22/joplin/pull/15672", "source": "security-advisories@github.com"}, {"url": "https://github.com/laurent22/joplin/security/advisories/GHSA-r24r-gp6h-cwgf", "source": "security-advisories@github.com"}, {"url": "https://github.com/laurent22/joplin/security/advisories/GHSA-r24r-gp6h-cwgf", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, Joplin accepts synchronized resource metadata whose id or file_extension contains parent-directory or path-separator characters. BaseItem.unserialize() stores the unvalidated fields, resourceFilename() concatenates them into a destination path, and ResourceFetcher writes the attacker-controlled resource blob outside the resource directory during background synchronization. An attacker with write access to a configured sync target or shared notebook can create or overwrite files at an attacker-chosen existing path without user interaction. This issue is fixed in versions 3.6.15 and 3.7.2."}], "lastModified": "2026-09-23T18:30:42.573", "sourceIdentifier": "security-advisories@github.com"}