CVE-2026-107369
The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL.
Published Oct 13, 2026 · updated Oct 13, 2026
The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · Catalog
Detected
The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.
Sources
- CVE.orgCVE-2026-107369
Official CVE identifier
cve.org - NIST NVDCVE-2026-107369
The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or s
nvd.nist.gov