{"id":"CVE-2023-36829","aliases":["GHSA-4xqm-4p72-87h6","PYSEC-2023-115"],"url":"https://o3.security/vulnerability/CVE-2023-36829","summary":"Sentry CORS misconfiguration vulnerability","details":"Sentry is an error tracking and performance monitoring platform. Starting in version 23.6.0 and prior to version 23.6.2, the Sentry API incorrectly returns the `access-control-allow-credentials: true` HTTP header if the `Origin` request header ends with the `system.base-hostname` option of Sentry installation. This only affects installations that have `system.base-hostname` option explicitly set, as it is empty by default. Impact is limited since recent versions of major browsers have cross-site cookie blocking enabled by default. However, this flaw could allow other multi-step attacks. The patch has been released in Sentry 23.6.2.","published":"2023-07-06T22:08:58.922Z","modified":"2026-07-15T01:49:14.984148101Z","cvss":{"score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"sentry","fixedVersion":"23.6.2"}],"fix":{"url":"https://github.com/getsentry/sentry/commit/ee44c6be35e5e464bc40637580f39867898acd8b","label":"getsentry/sentry@ee44c6b"},"references":[{"type":"WEB","url":"https://github.com/getsentry/self-hosted/releases/tag/23.6.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/36xxx/CVE-2023-36829.json"},{"type":"ADVISORY","url":"https://github.com/getsentry/sentry/security/advisories/GHSA-4xqm-4p72-87h6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36829"},{"type":"FIX","url":"https://github.com/getsentry/sentry/commit/ee44c6be35e5e464bc40637580f39867898acd8b"},{"type":"FIX","url":"https://github.com/getsentry/sentry/pull/52276"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:14.984148101Z"}}