Vulnerability record · CVE-2026-91924 · published 15 September 2026

CVE-2026-91924: Missing authorization vulnerability

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.

8.4 CVSS 4.0 High EPSS 0.42% · top 66.1% CWE-862 · Missing authorization Deferred

8.4CVSS 4.0 base score

0.42%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

6References

23 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/sosedoff/pgweb
https://github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api/api.go
https://github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api/routes.go
https://github.com/sosedoff/pgweb/issues/869
https://www.vulncheck.com/advisories/pgweb-through-0.17.0-missing-authorization-on-direct-connect-endpoint
https://github.com/sosedoff/pgweb/issues/869

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Source: NIST National Vulnerability Database (record CVE-2026-91924), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.