{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-85538", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-09-04T09:05:38.255Z", "datePublished": "2026-09-04T09:05:41.350Z", "dateUpdated": "2026-09-04T19:36:52.107Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "misp", "repo": "https://github.com/MISP/MISP/", "vendor": "misp", "versions": [{"lessThanOrEqual": "2.5.45", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "remediation developer", "value": "Andras Iklody"}, {"lang": "en", "type": "finder", "value": "elhoim (David Andr\u00e9)"}, {"lang": "en", "type": "finder", "value": "Claude Opus 5 (1M context)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>An incorrect authorization vulnerability in MISP allowed authenticated users to delete attributes from events despite lacking the required <code>perm_modify</code> or <code>perm_modify_org</code> permissions.</p><p>The affected attribute deletion paths relied on organization membership checks performed by <code>MispAttribute::deleteAttribute()</code> but did not consistently enforce MISP's event modification authorization rules. 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