{"id":"CVE-2026-90453","state":"PUBLISHED","title":"Open Redirect in Malcolm","description":"A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be redirected to an arbitrary external destination after completing an upload.","publishedAt":"2026-09-11T21:51:25.668Z","updatedAt":"2026-10-02T20:56:51.481Z","severity":{"score":5.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"icscert"},"assigner":"icscert","products":["CISA Malcolm"],"affected":[{"vendor":"CISA","product":"Malcolm","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"v26.06.0","versionType":"custom"},{"version":"v26.06.0","status":"unaffected"}],"repo":"https://github.com/cisagov/Malcolm"}],"references":["https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json","https://www.cisa.gov/news-events/ics-advisories/icsa-26-254-01"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90453.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90453","state":"PUBLISHED","datePublished":"2026-09-11T21:51:25.668Z","dateUpdated":"2026-10-02T20:56:51.481Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2026-09-11T21:00:09.301Z"},"containers":{"cna":{"title":"Open Redirect in Malcolm","descriptions":[{"lang":"en","value":"A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. 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Affected users are encouraged to update their instance of Malcolm to the latest version.","supportingMedia":[{"type":"text/html","base64":false,"value":"<div><div>The latest version of Malcolm (September 2026 or later) fixes these vulnerabilities. Affected users are encouraged to update their instance of Malcolm to the latest version.</div></div>"}]}],"source":{"advisory":"ICSA-26-254-01","discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-90453","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-14T12:54:30.614277Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T13:00:30.500Z"}}]}}}