{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66300","assignerOrgId":"9119a7d8-5eab-497f-8521-727c672e3725","state":"PUBLISHED","assignerShortName":"cisa-cg","dateReserved":"2026-07-24T15:58:38.179Z","datePublished":"2026-08-04T18:51:27.626Z","dateUpdated":"2026-08-04T18:58:36.936Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3."}],"affected":[{"vendor":"SNOMED International","product":"Snowstorm","defaultStatus":"unknown","versions":[{"version":"7.0.0","status":"affected","lessThan":"10.12.2","versionType":"custom"},{"version":"10.12.2","status":"unaffected"},{"version":"10.9.3","status":"unaffected"}]}],"problemTypes":[{"descriptions":[{"description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE","cweId":"CWE-79"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"HIGH","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"cvssV4_0":{"version":"4.0","baseScore":2.3,"attackVector":"NETWORK","baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","userInteraction":"PASSIVE","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","subIntegrityImpact":"NONE","vulnIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-04T16:06:49.793385Z","id":"CVE-2026-66300","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"SNOMED International Snowstorm reflected XSS","references":[{"name":"url","url":"https://github.com/IHTSDO/snowstorm/commit/575b555695811110dafe2fcea7dd2fd7e4bcee39","tags":["patch"]},{"name":"url","url":"https://github.com/IHTSDO/snowstorm/commit/b8061add427c930b3030549e77aa23ec5957ceb6","tags":["patch"]},{"name":"url","url":"https://www.cve.org/CVERecord?id=CVE-2026-66300","tags":["vdb-entry"]},{"name":"url","url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-212-01.json","tags":["third-party-advisory"]}],"credits":[{"value":"Michael Milkovich, CISA","lang":"en"},{"value":"Karl Meister, CISA","lang":"en"}],"datePublic":"2026-07-24T00:00:00.000Z","providerMetadata":{"orgId":"9119a7d8-5eab-497f-8521-727c672e3725","shortName":"cisa-cg","dateUpdated":"2026-08-04T18:51:27.626Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-04T18:58:26.743125Z","id":"CVE-2026-66300","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":"2026-08-04T18:58:36.936Z"}}]}}