CVE-2026-16503

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-31. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

Deployment of the VPS.org one-click Supabase template deploys a PostgreSQL instance that is published on all interfaces (0.0.0.0:5432) with a default database password set to "postgres". Because Docker installs its own iptables rules, this exposure bypasses a standard host UFW configuration.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

July 31, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet. Sources: cert.
cert

VU#243636 - VPS.org one-click deployment templates contain multiple vulnerabilities

https://kb.cert.org/vuls/id/243636

Vendor Advisories for CVE-2026-16503(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 41× in last 7d / 174× 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.

Showing the most recent 100 of 325 total refreshes for this CVE.

  1. 2026-09-19 04:06 UTCGHSA enrichment
  2. 2026-09-18 22:25 UTCEG score recompute
  3. 2026-09-18 22:25 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 17:54 UTCGHSA enrichment
  6. 2026-09-18 13:31 UTCGHSA enrichment
  7. 2026-09-18 08:38 UTCGHSA enrichment
  8. 2026-09-18 04:57 UTCGHSA enrichment
  9. 2026-09-18 01:16 UTCEG score recompute
  10. 2026-09-18 01:16 UTCGHSA enrichment
  11. 2026-09-17 08:48 UTCGHSA enrichment
  12. 2026-09-17 05:05 UTCGHSA enrichment
  13. 2026-09-17 01:24 UTCEG score recompute
  14. 2026-09-17 01:24 UTCGHSA enrichment
  15. 2026-09-16 14:07 UTCEPSS rescore
  16. 2026-09-16 11:20 UTCGHSA enrichment
  17. 2026-09-16 05:28 UTCEG score recompute
  18. 2026-09-16 05:28 UTCGHSA enrichment
  19. 2026-09-16 05:14 UTCEPSS rescore
  20. 2026-09-15 07:06 UTCEG score recompute
  21. 2026-09-15 07:06 UTCGHSA enrichment
  22. 2026-09-15 03:02 UTCGHSA enrichment
  23. 2026-09-14 14:12 UTCGHSA enrichment
  24. 2026-09-14 10:26 UTCGHSA enrichment
  25. 2026-09-14 06:45 UTCGHSA enrichment
Show 75 more
  1. 2026-09-14 03:03 UTCGHSA enrichment
  2. 2026-09-13 23:22 UTCGHSA enrichment
  3. 2026-09-13 19:41 UTCEG score recompute
  4. 2026-09-13 19:41 UTCGHSA enrichment
  5. 2026-09-13 16:46 UTCEPSS rescore
  6. 2026-09-13 15:12 UTCGHSA enrichment
  7. 2026-09-13 10:56 UTCGHSA enrichment
  8. 2026-09-13 07:11 UTCGHSA enrichment
  9. 2026-09-13 03:30 UTCGHSA enrichment
  10. 2026-09-12 23:48 UTCGHSA enrichment
  11. 2026-09-12 19:47 UTCGHSA enrichment
  12. 2026-09-12 16:06 UTCEG score recompute
  13. 2026-09-12 16:06 UTCGHSA enrichment
  14. 2026-09-12 15:00 UTCEPSS rescore
  15. 2026-09-12 12:25 UTCGHSA enrichment
  16. 2026-09-12 08:22 UTCGHSA enrichment
  17. 2026-09-12 04:16 UTCGHSA enrichment
  18. 2026-09-12 00:31 UTCGHSA enrichment
  19. 2026-09-11 18:39 UTCGHSA enrichment
  20. 2026-09-11 14:57 UTCEG score recompute
  21. 2026-09-11 14:57 UTCGHSA enrichment
  22. 2026-09-11 14:52 UTCEPSS rescore
  23. 2026-09-11 09:36 UTCEPSS rescore
  24. 2026-09-11 06:03 UTCGHSA enrichment
  25. 2026-09-11 02:18 UTCGHSA enrichment
  26. 2026-09-10 22:37 UTCGHSA enrichment
  27. 2026-09-10 18:56 UTCGHSA enrichment
  28. 2026-09-10 12:56 UTCEG score recompute
  29. 2026-09-10 12:56 UTCGHSA enrichment
  30. 2026-09-10 09:34 UTCEPSS rescore
  31. 2026-09-10 07:05 UTCGHSA enrichment
  32. 2026-09-10 03:22 UTCGHSA enrichment
  33. 2026-09-09 10:50 UTCGHSA enrichment
  34. 2026-09-09 07:04 UTCEG score recompute
  35. 2026-09-09 07:04 UTCGHSA enrichment
  36. 2026-09-08 22:00 UTCEPSS rescore
  37. 2026-09-08 16:13 UTCGHSA enrichment
  38. 2026-09-08 02:56 UTCGHSA enrichment
  39. 2026-09-07 23:15 UTCGHSA enrichment
  40. 2026-09-07 19:33 UTCGHSA enrichment
  41. 2026-09-06 20:47 UTCGHSA enrichment
  42. 2026-09-06 16:56 UTCEG score recompute
  43. 2026-09-06 16:56 UTCGHSA enrichment
  44. 2026-09-06 13:47 UTCEPSS rescore
  45. 2026-09-06 13:14 UTCGHSA enrichment
  46. 2026-09-06 09:32 UTCGHSA enrichment
  47. 2026-09-06 05:51 UTCGHSA enrichment
  48. 2026-09-06 02:09 UTCGHSA enrichment
  49. 2026-09-05 22:27 UTCGHSA enrichment
  50. 2026-09-05 18:46 UTCEG score recompute
  51. 2026-09-05 18:46 UTCGHSA enrichment
  52. 2026-09-05 08:26 UTCGHSA enrichment
  53. 2026-09-05 04:45 UTCGHSA enrichment
  54. 2026-09-04 18:00 UTCGHSA enrichment
  55. 2026-09-04 14:17 UTCEG score recompute
  56. 2026-09-04 14:17 UTCGHSA enrichment
  57. 2026-09-04 10:29 UTCEG score recompute
  58. 2026-09-04 10:29 UTCGHSA enrichment
  59. 2026-09-04 05:06 UTCEPSS rescore
  60. 2026-09-04 04:02 UTCGHSA enrichment
  61. 2026-09-03 21:10 UTCGHSA enrichment
  62. 2026-09-03 09:10 UTCEG score recompute
  63. 2026-09-03 09:10 UTCGHSA enrichment
  64. 2026-09-02 14:11 UTCEPSS rescore
  65. 2026-09-02 08:11 UTCGHSA enrichment
  66. 2026-09-01 22:33 UTCEG score recompute
  67. 2026-09-01 22:33 UTCGHSA enrichment
  68. 2026-09-01 13:53 UTCEPSS rescore
  69. 2026-09-01 07:26 UTCGHSA enrichment
  70. 2026-09-01 03:21 UTCGHSA enrichment
  71. 2026-08-31 23:25 UTCGHSA enrichment
  72. 2026-08-31 04:47 UTCGHSA enrichment
  73. 2026-08-31 01:06 UTCGHSA enrichment
  74. 2026-08-30 21:25 UTCEG score recompute
  75. 2026-08-30 21:25 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-16503?
CVE-2026-16503 is a critical vulnerability published on July 31, 2026. Deployment of the VPS.org one-click Supabase template deploys a PostgreSQL instance that is published on all interfaces (0.0.0.0:5432) with a default database password set to "postgres". Because Docker installs its own iptables rules, this exposure bypasses a standard host UFW configuration.
When was CVE-2026-16503 disclosed?
CVE-2026-16503 was first published in the National Vulnerability Database on July 31, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16503 actively exploited?
CVE-2026-16503 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 74.7% of all scored CVEs.
What is the CVSS score of CVE-2026-16503?
CVE-2026-16503 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16503?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16503, 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

Explore the affected products and dependency analysis for CVE-2026-16503

Explore →

Is Your Infrastructure Affected by CVE-2026-16503?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs