CVE-2026-91924

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. the CNA's CVSS baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.5
EG Score
8.5(high)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity85% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 24, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

pgweb through 0.17.0 Missing Authorization on Direct Connect Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pgweb-through-0.17.0-missing-authorization-on-direct-connect-endpoint
generic

pgweb/pkg/api/api.go at 6b0b0244d1aefd6971999b03481eeeaa4ec7cf55 · sosedoff/pgweb · GitHub

https://github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api/api.go
generic

pgweb/pkg/api/routes.go at 6b0b0244d1aefd6971999b03481eeeaa4ec7cf55 · sosedoff/pgweb · GitHub

https://github.com/sosedoff/pgweb/blob/6b0b0244d1aefd6971999b03481eeeaa4ec7cf55/pkg/api/routes.go
generic

GitHub - sosedoff/pgweb: Cross-platform client for PostgreSQL databases · GitHub

https://github.com/sosedoff/pgweb
generic

Connect-backend authorization bypass via direct /api/connect arbitrary connection string · Issue #869 · sosedoff/pgweb · GitHub

https://github.com/sosedoff/pgweb/issues/869

Vendor Advisories for CVE-2026-91924(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 02:45 UTCGHSA enrichment
  2. 2026-09-24 14:52 UTCEG score recompute
  3. 2026-09-24 14:52 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 05:14 UTCEG score recompute
  6. 2026-09-24 05:14 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:21 UTCGHSA enrichment
  9. 2026-09-23 13:57 UTCGHSA enrichment
  10. 2026-09-23 02:05 UTCEG score recompute
  11. 2026-09-23 02:05 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 14:12 UTCGHSA enrichment
  14. 2026-09-22 02:20 UTCEG score recompute
  15. 2026-09-22 02:20 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 14:27 UTCGHSA enrichment
  18. 2026-09-21 02:35 UTCEG score recompute
  19. 2026-09-21 02:35 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 14:42 UTCGHSA enrichment
  22. 2026-09-20 02:48 UTCEG score recompute
  23. 2026-09-20 02:47 UTCGHSA enrichment
  24. 2026-09-19 14:55 UTCGHSA enrichment
  25. 2026-09-19 03:03 UTCEG score recompute
Show 20 more
  1. 2026-09-19 03:02 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 15:10 UTCGHSA enrichment
  4. 2026-09-18 03:17 UTCEG score recompute
  5. 2026-09-18 03:17 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 15:24 UTCEG score recompute
  8. 2026-09-17 15:24 UTCGHSA enrichment
  9. 2026-09-17 14:35 UTCEG score recompute
  10. 2026-09-17 14:35 UTCGHSA enrichment
  11. 2026-09-17 11:00 UTCGHSA enrichment
  12. 2026-09-16 23:07 UTCEG score recompute
  13. 2026-09-16 23:07 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 11:14 UTCGHSA enrichment
  16. 2026-09-15 23:22 UTCEG score recompute
  17. 2026-09-15 23:22 UTCGHSA enrichment
  18. 2026-09-15 11:29 UTCEG score recompute
  19. 2026-09-15 11:03 UTCEG score recompute
  20. 2026-09-15 11:02 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-91924?
CVE-2026-91924 is a high vulnerability published on September 15, 2026. 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…
When was CVE-2026-91924 disclosed?
CVE-2026-91924 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91924 actively exploited?
CVE-2026-91924 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 66.3% of all scored CVEs.
What is the CVSS score of CVE-2026-91924?
CVE-2026-91924 has a CVSS v4.0 base score of 8.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-91924?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91924, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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