CVE-2026-91924

pgweb through 0.17.0 leaves the POST /api/connect endpoint unguarded when connect-backend authorization is configured, allowing attackers to supply arbitrary database connection strings. Attackers can bypass the resource-to-database mapping by providing a custom session identifier and connection URL to access unauthorized databases and internal services.

  • Published Sep 15, 2026
  • CVSS 8.4 high
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-91924 at the National Vulnerability Database