Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck
CVE-2026-73515PostGIS < 3.7.0beta2 Out-of-Bounds Read via FlatGeobuf Buffer
High 8.1
In plain English
A high-severity out-of-bounds read in PostGIS from PostGIS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 52.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | pg_repack | 1.5.1-1.module_el9.6.0+146+c54fdeca | ALSA-2026:67491 |
| AlmaLinux:9 | pg_repack | 1.5.3-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | pgaudit | 16.0-1.module_el9.4.0+66+eb9878bc | ALSA-2026:67491 |
| AlmaLinux:9 | pgaudit | 18.0-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | pgvector | 0.6.2-2.module_el9.6.0+167+4e561146 | ALSA-2026:67491 |
| AlmaLinux:9 | pgvector | 0.8.1-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:10 | postgis | 3.5.3-4.el10_2.1 | ALSA-2026:65899 |
| AlmaLinux:9 | postgis | 3.5.3-6.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgis | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:10 | postgis-client | 3.5.3-4.el10_2.1 | ALSA-2026:65899 |
| AlmaLinux:9 | postgis-client | 3.5.3-6.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgis-client | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:10 | postgis-docs | 3.5.3-4.el10_2.1 | ALSA-2026:65899 |
| AlmaLinux:9 | postgis-docs | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-docs | 3.5.3-6.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:10 | postgis-upgrade | 3.5.3-4.el10_2.1 | ALSA-2026:65899 |
| AlmaLinux:9 | postgis-upgrade | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-upgrade | 3.5.3-6.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:10 | postgis-utils | 3.5.3-4.el10_2.1 | ALSA-2026:65899 |
| AlmaLinux:9 | postgis-utils | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-utils | 3.5.3-6.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgres-decoderbufs | 2.4.0-1.Final.module_el9.4.0+66+eb9878bc | ALSA-2026:67491 |
| AlmaLinux:9 | postgres-decoderbufs | 3.3.1-1.Final.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-contrib | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-contrib | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-docs | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-docs | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-plperl | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-plperl | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-plpython3 | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-plpython3 | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-pltcl | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-pltcl | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-private-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-private-devel | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-private-libs | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-private-libs | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-server | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-server | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-server-devel | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-server-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-static | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-static | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-test | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-test | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-test-rpm-macros | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-test-rpm-macros | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-upgrade | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-upgrade | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-upgrade-devel | 16.15-1.module_el9.8.0+311+c39b793b | ALSA-2026:67491 |
| AlmaLinux:9 | postgresql-upgrade-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:10 | postgresql18-postgis | 3.5.3-1.el10_2.1 | ALSA-2026:67166 |
| AlmaLinux:10 | postgresql18-postgis-client | 3.5.3-1.el10_2.1 | ALSA-2026:67166 |
| AlmaLinux:10 | postgresql18-postgis-docs | 3.5.3-1.el10_2.1 | ALSA-2026:67166 |
| AlmaLinux:10 | postgresql18-postgis-upgrade | 3.5.3-1.el10_2.1 | ALSA-2026:67166 |
| AlmaLinux:10 | postgresql18-postgis-utils | 3.5.3-1.el10_2.1 | ALSA-2026:67166 |
| Debian:12 | postgis | no fix listed | DEBIAN-CVE-2026-73515 |
| Debian:13 | postgis | no fix listed | DEBIAN-CVE-2026-73515 |
| Debian:14 | postgis | 3.7.0+dfsg-1 | DEBIAN-CVE-2026-73515 |
| Rocky Linux:9 | pg_repack | 0:1.5.1-1.module+el9.8.0+40212+d6f50005 | RLSA-2026:67491 |
| Rocky Linux:9 | pg_repack | 0:1.5.1-1.module+el9.8.0+40159+adcaa225 | RLSA-2026:67491 |
| Rocky Linux:9 | pg_repack | 0:1.5.3-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pg_repack | 0:1.5.3-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | pgaudit | 0:18.0-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pgaudit | 0:16.0-1.module+el9.8.0+40159+adcaa225 | RLSA-2026:67491 |
| Rocky Linux:9 | pgaudit | 0:16.0-1.module+el9.8.0+40212+d6f50005 | RLSA-2026:67491 |
| Rocky Linux:9 | pgaudit | 0:18.0-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | pgvector | 0:0.6.2-2.module+el9.8.0+40212+d6f50005 | RLSA-2026:67491 |
| Rocky Linux:9 | pgvector | 0:0.8.1-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | pgvector | 0:0.8.1-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pgvector | 0:0.6.2-2.module+el9.8.0+40159+adcaa225 | RLSA-2026:67491 |
| Rocky Linux:9 | postgres-decoderbufs | 0:2.4.0-1.Final.module+el9.8.0+40159+adcaa225 | RLSA-2026:67491 |
| Rocky Linux:9 | postgres-decoderbufs | 0:3.3.1-1.Final.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | postgres-decoderbufs | 0:3.3.1-1.Final.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | postgres-decoderbufs | 0:2.4.0-1.Final.module+el9.8.0+40212+d6f50005 | RLSA-2026:67491 |
| Rocky Linux:10 | postgresql16-postgis | 0:3.5.3-4.el10_2.1 | RLSA-2026:65899 |
| Rocky Linux:10 | postgresql18-postgis | 0:3.5.3-1.el10_2.1 | RLSA-2026:67166 |
| Ubuntu:22.04:LTS | postgis | no fix listed | UBUNTU-CVE-2026-73515 |
| Ubuntu:24.04:LTS | postgis | no fix listed | UBUNTU-CVE-2026-73515 |
| Ubuntu:26.04:LTS | postgis | no fix listed | UBUNTU-CVE-2026-73515 |
| Ubuntu:26.10 | postgis | no fix listed | UBUNTU-CVE-2026-73515 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
References
- Researcher Blog technical-description, exploit
- Changelog release-notes
- https://www.vulncheck.com/advisories/postgis-0beta2-out-of-bounds-read-via-flatgeobuf-buffer third-party-advisory