Memory disclosure and crash via FlatGeobuf decoding
Published Aug 13, 2026 · Updated Aug 13, 2026
Out-of-bounds read in PostGIS before 3.7.0beta2 allows remote authenticated users to disclose memory or crash the database server. The FlatGeobuf property metadata decoder accepts a present string-length field without confirming that the complete string body remains inside the supplied buffer before exposing it as a SQL value. Database access with permission to invoke the FlatGeobuf import path is required; successful exploitation exposes process memory or interrupts the affected backend.
Summary
What happened
Out-of-bounds read in PostGIS before 3.7.0beta2 allows remote authenticated users to disclose memory or crash the database server. The FlatGeobuf property metadata decoder accepts a present string-length field without confirming that the complete string body remains inside the supplied buffer before exposing it as a SQL value. Database access with permission to invoke the FlatGeobuf import path is required; successful exploitation exposes process memory or interrupts the affected backend.
The record
- CVE
- CVE-2026-73515
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- PostGIS
- Product
- PostGIS
- Classifications
- CWE-125, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.7.0beta2
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Managed PostgreSQL PostGIS exploit-chain demonstrationfunctional · demonstrated
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Reported exploitation
Technologies
Your stack
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Your stack
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