Auth bypass in Sosedoff Pgweb
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/sosedoff/pgweb (product)
- github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api… (technical-description)
- github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api… (technical-description)
- github.com/sosedoff/pgweb/issues/869 (issue-tracking)
- www.vulncheck.com/advisories/pgweb-through-0.17.0-missing-authorization-on-dire… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91924?
- CVE-2026-91924 is a high-severity vulnerability in Sosedoff Pgweb, classified under Missing Authorization. CVSS score: 8.5/10. Published 2026-09-15.
- How severe is CVE-2026-91924?
- High severity. CVSS v3 base score is 8.5 out of 10.