CVE-2026-52884

{"id": "CVE-2026-52884", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52884", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-29T12:10:33.378787Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "notepad-plus-plus", "product": "notepad-plus-plus", "versions": [{"status": "affected", "version": "= 8.9.6.1"}]}]}], "published": "2026-06-26T21:16:34.797", "references": [{"url": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/ea1508855e9c4528f6198ce9d345f13cb759ebf4", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-p58x-r3c9-x9p6", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-42"}]}], "descriptions": [{"lang": "en", "value": "Notepad++ is a free and open-source source code editor. In v8.9.6.1, isInTrustedDirectory() does NOT canonicalize the path before checking. It uses a prefix-based check (PathIsPrefix() or equivalent) that matches paths starting with trusted directory strings. A path traversal using ..\\..\\ after a trusted directory prefix passes the check while resolving to an untrusted location. The CVE-2026-48800 patch adds isInTrustedDirectory() validation in Command::run() (RunDlg.cpp) before calling ShellExecute(). This function checks whether the resolved executable path is under a trusted directory. This vulnerability is fixed in 8.9.6.2."}], "lastModified": "2026-06-29T21:22:26.173", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:notepad-plus-plus:notepad\\+\\+:8.9.6.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF4B62FE-F294-4DF6-AFFF-27478F8D4C80"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}