{"id":"CVE-2026-101152","state":"PUBLISHED","title":"Security Advisory 0187","description":"Insufficient validation in the Single Sign-On (SSO) login flow could allow a remote, unauthenticated attacker to craft a URL that, when clicked by a user, causes the identity provider (IdP) to deliver authentication material to an attacker-controlled URL instead of to CloudVision.","publishedAt":"2026-10-06T19:37:53.573Z","updatedAt":"2026-10-06T19:49:57.474Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"Arista"},"assigner":"Arista","products":["Arista Networks CloudVision Portal"],"affected":[{"vendor":"Arista Networks","product":"CloudVision Portal","defaultStatus":"unaffected","versions":[{"version":"2026.2.0","status":"affected","versionType":"custom"},{"version":"2026.1.0","status":"affected","lessThanOrEqual":"2026.1.2","versionType":"custom"},{"version":"2025.3.0","status":"affected","lessThanOrEqual":"2025.3.3","versionType":"custom"},{"version":"2021.1.0","status":"affected","lessThan":"2025.3.0","versionType":"custom"}],"platforms":["CloudVision Portal, virtual appliance or physical appliance"]}],"references":["https://www.arista.com/en/support/advisories-notices/security-advisory/24803-security-advisory-0187"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101152.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101152","state":"PUBLISHED","datePublished":"2026-10-06T19:37:53.573Z","dateUpdated":"2026-10-06T19:49:57.474Z","assignerShortName":"Arista","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateReserved":"2026-09-28T08:30:31.034Z"},"containers":{"cna":{"title":"Security Advisory 0187","descriptions":[{"lang":"en","value":"Insufficient validation in the Single Sign-On (SSO) login flow could allow a remote, unauthenticated attacker to craft a URL that, when clicked by a user, causes the identity provider (IdP) to deliver authentication material to an attacker-controlled URL instead of to CloudVision."}],"affected":[{"vendor":"Arista Networks","product":"CloudVision Portal","defaultStatus":"unaffected","versions":[{"version":"2026.2.0","status":"affected","versionType":"custom"},{"version":"2026.1.0","status":"affected","lessThanOrEqual":"2026.1.2","versionType":"custom"},{"version":"2025.3.0","status":"affected","lessThanOrEqual":"2025.3.3","versionType":"custom"},{"version":"2021.1.0","status":"affected","lessThan":"2025.3.0","versionType":"custom"}],"platforms":["CloudVision Portal, virtual appliance or physical appliance"]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24803-security-advisory-0187","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","baseScore":8,"baseSeverity":"HIGH"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","baseScore":7.6,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","type":"CWE","lang":"en","description":"CWE-601 URL Redirection to Untrusted Site ('Open Redirect')"}]}],"providerMetadata":{"shortName":"Arista","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateUpdated":"2026-10-06T19:37:53.573Z"},"impacts":[{"capecId":"CAPEC-194","descriptions":[{"lang":"en","value":"CAPEC-194 Fake the Source of Data"}]}],"configurations":[{"lang":"en","value":"In order to be vulnerable to CVE-2026-101152, SSO must be configured with an external identity provider. Deployments using only non-SSO authentication are not affected. To check if SSO is configured, navigate to Settings → Authentication in the CloudVision UI. If an OIDC or SAML provider is configured, the deployment is potentially affected.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>In order to be vulnerable to CVE-2026-101152, SSO must be configured with an external identity provider. Deployments using only non-SSO authentication are not affected. To check if SSO is configured, navigate to <strong>Settings → Authentication</strong> in the CloudVision UI. If an OIDC or SAML provider is configured, the deployment is potentially affected.</p>"}]}],"workarounds":[{"lang":"en","value":"No mitigation exists for this issue.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>No mitigation exists for this issue.</p>"}]}],"solutions":[{"lang":"en","value":"CVE-2026-101152 has been fixed in the following releases:\n- 2026.2.1 and later releases in the 2026.2.x train\n- 2026.1.3 and later releases in the 2026.1.x train\n- 2025.3.4 and later releases in the 2025.3.x train","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>CVE-2026-101152 has been fixed in the following releases:</p><ul><li>2026.2.1 and later releases in the 2026.2.x train</li><li>2026.1.3 and later releases in the 2026.1.x train</li><li>2025.3.4 and later releases in the 2025.3.x train</li></ul>"}]}],"source":{"advisory":"Security Advisory 0187","discovery":"INTERNAL","defects":["BUG 1864515"]}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T19:49:47.242959Z","id":"CVE-2026-101152","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T19:49:57.474Z"}}]}}}