{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "26.5.0"
              },
              {
                "fixed": "26.7.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "aed5b2037e74c771bfe476dbdbeb80420ef4a3d8"
            },
            {
              "fixed": "23a39a206db72cb0edc1b29d6fd595198ef10a0e"
            }
          ],
          "repo": "https://github.com/getsentry/self-hosted",
          "type": "GIT"
        },
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9c982d4bcb81c93e2db552084bcbb45cdd34bdd3"
            },
            {
              "fixed": "ec963de4ec8c7f340f286c6f613e55458a9e5ddf"
            },
            {
              "fixed": "a8da553fe6f01f51cb05d253c641d2a074e38484"
            }
          ],
          "repo": "https://github.com/getsentry/sentry",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w699-8wff-fqxw"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102899.json"
  },
  "details": "Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2.",
  "id": "CVE-2026-102899",
  "modified": "2026-10-16T02:30:38.346460919Z",
  "published": "2026-10-14T18:57:50.768Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/getsentry/self-hosted/releases/tag/26.7.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/getsentry/sentry/releases/tag/26.7.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102899.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102899"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddf"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getsentry/sentry/pull/120467"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getsentry/sentry/pull/120702"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Sentry: Improper authentication on SAML SSO process allows user identity linking"
}