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TI-2026-51624 Aliases CVE-2026-73515GHSA-qv7r-wgc7-6mc6

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

Priority HIGH 67CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00566 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed PostGIS (PostGIS): 3.7.0beta2Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PostGISPostGISbefore 3.7.0beta23.7.0beta2Patch availableCNA
  • PostGIS VendorPostGIS Affected before 3.7.0beta2 Fixed in 3.7.0beta2 Patch available CNA

Remediation

  • Fix · CNA PostGIS (PostGIS) Fixed in 3.7.0beta2

Red Hat 4 advisories

  • RHSA-2026:67848 Released 2026-09-16 · Red Hat rating Important
    postgresql:18 security update
    • Red Hat Enterprise Linux AppStream (v. 9) pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.aarch64::postgresql:18, pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.ppc64le::postgresql:18, pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.s390x::postgresql:18 +47
  • RHSA-2026:67491 Released 2026-09-15 · Red Hat rating Important
    postgresql:16 security update
    • Red Hat Enterprise Linux AppStream (v. 9) pg_repack-1.5.1-1.module+el9.8.0+24090+8f0ee565.aarch64::postgresql:16, pg_repack-1.5.1-1.module+el9.8.0+24090+8f0ee565.ppc64le::postgresql:16, pg_repack-1.5.1-1.module+el9.8.0+24090+8f0ee565.s390x::postgresql:16 +47
  • RHSA-2026:67166 Released 2026-09-14 · Red Hat rating Important
    postgresql18-postgis security update
    • Red Hat Enterprise Linux AppStream (v. 10) postgresql18-postgis-3.5.3-1.el10_2.1, postgresql18-postgis-client-3.5.3-1.el10_2.1, postgresql18-postgis-docs-3.5.3-1.el10_2.1 +2
Show 1 more Red Hat advisories
  • RHSA-2026:65899 Released 2026-09-09 · Red Hat rating Important
    postgresql16-postgis security update
    • Red Hat Enterprise Linux AppStream (v. 10) postgis-3.5.3-4.el10_2.1, postgis-client-3.5.3-4.el10_2.1, postgis-docs-3.5.3-4.el10_2.1 +3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:65899, RHSA-2026:67166
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:67491, RHSA-2026:67848

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73515
  2. 2026-10-03 Alias added: GHSA-qv7r-wgc7-6mc6

References

Exploit 1

Other 1

  • TI-2026-51623 PostGIS address_standardizer Out-of-Bounds Write via standardize_address() CVSS 4.0HIGH 8.7
  • TI-2017-13533 PostGIS 2.x before 2.3.3, as used with PostgreSQL, allows remote attackers to cause a… CVSS 3.1HIGH 7.5
  • TI-2026-61682 PostGIS address_standardizer through 3.7.0 Out-of-Bounds Read via Unvalidated Rule Weight CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences