Medium
psqlodbc — security advisory
Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.
- Products
- psqlodbc
- Affected versions
- 1:09.03.0300-1, 1:09.06.0410-1, 1:10.00.0000-1, 1:10.01.0000-1, 1:11.00.0000-1, 1:12.00.0000-1, 1:12.01.0000-1, 1:13.00.0000-1, 1:13.02.0000-1, 1:13.02.0000-2, 1:15.00.0000-1, 1:16.00.0000-1, 1:17.00.0006-2, 1:17.00.0007-1, 1:18.00.0001-1, 1:18.00.0002-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-109448
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:54 UTC · Revision 1
Source evidence
Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.
osv:UBUNTU-CVE-2026-109448
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
psqlodbc
Fixed versions: Not specified
Complete source record
{
"id": "c5516c50ce05fce72cf9d9a69465aaccb41e3db5a1e9bef91d1a4f4ecb00c028",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-109448",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-109448",
"summary": "Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.",
"evidence": "osv:UBUNTU-CVE-2026-109448",
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"severity": "medium",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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"package": {
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"purl": "pkg:deb/ubuntu/psqlodbc?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
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"modified": "2026-10-17T12:59:49.272774110Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-109448",
"https://www.cve.org/CVERecord?id=CVE-2026-109448",
"https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-cmfx-rm3r-p2jr"
]
},
"related_cves": [
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"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359808,
"published_at": "2026-10-12T18:17:00+00:00"
}