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HIGH

CVE-2026-73515

CVSS v3

8.1

HIGH

EPSS Score

0.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • postgisBitnamiall versions · fixed in 3.7.0
  • pg_repackAlmaLinux:9all versions · fixed in 1.5.3-1.module_el9.8.0+234+5456f35d
  • pgauditAlmaLinux:9all versions · fixed in 18.0-1.module_el9.8.0+234+5456f35d
  • pgvectorAlmaLinux:9all versions · fixed in 0.8.1-1.module_el9.8.0+234+5456f35d
  • postgisAlmaLinux:10all versions · fixed in 3.5.3-4.el10_2.1and 4 other packages
  • postgisAlmaLinux:9all versions · fixed in 3.6.1-4.module_el9.8.0+310+22372bccand 4 other packages
  • postgres-decoderbufsAlmaLinux:9all versions · fixed in 3.3.1-1.Final.module_el9.8.0+234+5456f35d
  • postgresqlAlmaLinux:9all versions · fixed in 18.6-1.module_el9.8.0+310+22372bccand 14 other packages

1 more package range on OSV.dev

Vendor advisories

  • CVE-2026-73515 Red Hat Product Security476 products fixed

    postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer

  • RHSA-2026:67848 Red Hat Product Security199 products fixed

    Red Hat Security Advisory: postgresql:18 security update

  • RHSA-2026:67491 Red Hat Product Security199 products fixed

    Red Hat Security Advisory: postgresql:16 security update

  • RHSA-2026:67166 Red Hat Product Security37 products fixed

    Red Hat Security Advisory: postgresql18-postgis security update

  • RHSA-2026:65899 Red Hat Product Security41 products fixed

    Red Hat Security Advisory: postgresql16-postgis security update

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Published
2026-08-13
Last Modified
2026-08-13

Frequently asked questions

What is CVE-2026-73515?

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.

Is CVE-2026-73515 actively exploited?

Active exploitation of CVE-2026-73515 has not been confirmed. Its EPSS score was 0.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-73515?

CVE-2026-73515 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

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