MediumFix available
postgresql14, postgresql15 and 1 more products — security advisory
A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.
- Products
- postgresql14, postgresql15, postgresql16
- Affected versions
- Not specified
- Fixed versions
- 14.10-r0, 15.5-r0, 16.1-r0
- CVEs
- CVE-2023-5868
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:06 UTC · Revision 1
Source evidence
A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.
osv:ALPINE-CVE-2023-5868
postgresql14
Fixed versions: 14.10-r0
postgresql14
Fixed versions: 14.10-r0
postgresql14
Fixed versions: 14.10-r0
postgresql14
Fixed versions: 14.10-r0
postgresql15
Fixed versions: 15.5-r0
postgresql15
Fixed versions: 15.5-r0
postgresql15
Fixed versions: 15.5-r0
postgresql15
Fixed versions: 15.5-r0
postgresql16
Fixed versions: 16.1-r0
postgresql16
Fixed versions: 16.1-r0
postgresql16
Fixed versions: 16.1-r0
postgresql16
Fixed versions: 16.1-r0
Complete source record
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"modified": "2026-10-26T17:17:58.666451135Z",
"provider": "osv",
"upstream": [
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"references": [
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"source_id": "core-osv",
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"published_at": "2023-12-10T18:15:07.163+00:00"
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