CVE-2026-73515

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

PostGIS before 3.7.0beta2 contains an out-of-bounds read vulnerability that allows attackers to cause memory disclosure or a server crash by supplying a malformed FlatGeobuf buffer. The FlatGeobuf property metadata decoder verifies that a string length field is present but fails to verify that the subsequent string body is contained within the supplied buffer before materializing it into a SQL-visible value, enabling memory disclosure or denial of service.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

PostGIS < 3.7.0beta2 Out-of-Bounds Read via FlatGeobuf Buffer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/postgis-0beta2-out-of-bounds-read-via-flatgeobuf-buffer
generic
https://gitea.osgeo.org/postgis/postgis/raw/tag/3.7.0beta2/NEWS
generic🔴 Active Exploitation

Part 1/6 | Systemic Risks in the Managed PostgreSQL Industry: Extension Risks Are Real! Exploiting PostGis Memory Corruption Bug at NeonDB, SupaBase and Many More - Mehmet Ince @mdisec - Vulnerability Researcher | Building security products | Security Advisor | Amateur Muay Thai fighter

https://mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-extension-risks-are-real-exploiting-postgis-memory-corruption-bug-at-neondb-supabase-and-many-more/

Vendor Advisories for CVE-2026-73515(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 31× in last 7d / 38× 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. 2026-08-21 08:12 UTCEG score recompute
  2. 2026-08-21 08:12 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 20:03 UTCGHSA enrichment
  5. 2026-08-20 07:54 UTCGHSA enrichment
  6. 2026-08-19 19:46 UTCEG score recompute
  7. 2026-08-19 19:46 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 07:36 UTCGHSA enrichment
  10. 2026-08-18 19:28 UTCEG score recompute
  11. 2026-08-18 19:28 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 07:19 UTCGHSA enrichment
  15. 2026-08-17 19:11 UTCEG score recompute
  16. 2026-08-17 19:10 UTCGHSA enrichment
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-17 05:50 UTCGHSA enrichment
  19. 2026-08-16 17:42 UTCEG score recompute
  20. 2026-08-16 17:42 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 05:33 UTCEG score recompute
  24. 2026-08-16 05:33 UTCGHSA enrichment
  25. 2026-08-16 02:15 UTCEPSS rescore
Show 13 more
  1. 2026-08-15 17:25 UTCGHSA enrichment
  2. 2026-08-15 05:16 UTCEG score recompute
  3. 2026-08-15 05:16 UTCGHSA enrichment
  4. 2026-08-15 01:31 UTCEPSS rescore
  5. 2026-08-14 17:07 UTCEG score recompute
  6. 2026-08-14 17:07 UTCGHSA enrichment
  7. 2026-08-14 06:27 UTCEG score recompute
  8. 2026-08-14 06:27 UTCGHSA enrichment
  9. 2026-08-13 18:18 UTCEG score recompute
  10. 2026-08-13 17:27 UTCEG score recompute
  11. 2026-08-13 16:25 UTCEG score recompute
  12. 2026-08-13 15:57 UTCEG score recompute
  13. 2026-08-13 15:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73515?
CVE-2026-73515 is a high vulnerability published on August 13, 2026. PostGIS before 3.7.0beta2 contains an out-of-bounds read vulnerability that allows attackers to cause memory disclosure or a server crash by supplying a malformed FlatGeobuf buffer. The FlatGeobuf property metadata decoder verifies that a string length field is present but fails to verify that the…
When was CVE-2026-73515 disclosed?
CVE-2026-73515 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73515 actively exploited?
CVE-2026-73515 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 65.2% of all scored CVEs.
What is the CVSS score of CVE-2026-73515?
CVE-2026-73515 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-73515?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73515, 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-2026-73515

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