CVE-2026-97469: Use of Weak Hash in DALIBO PostgreSQL Anonymizer
PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to repeatedly call the anon.hash() function and collects (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt. A masked role can run a RESTRICTED function when the call is placed inside the sub-select. The problem is resolved in PostgreSQL Anonymizer 3.2.3 and later versions
AI Analysis
Technical Summary
The PostgreSQL Anonymizer product from DALIBO has a vulnerability (CVE-2026-97469) where unprivileged masked users can repeatedly invoke the anon.hash() function to gather (seed, hash_output) pairs. This enables an offline brute-force attack to deduce the salt used in hashing. The vulnerability arises because a masked role can execute a RESTRICTED function within a sub-select call. The issue is resolved in PostgreSQL Anonymizer version 3.2.3 and later.
Potential Impact
An attacker with masked user privileges can perform offline brute-force attacks to deduce the salt used in the anon.hash() function. This could weaken the anonymization process by allowing partial recovery of hashed data. The CVSS score of 4.3 indicates a medium severity impact with limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade PostgreSQL Anonymizer to version 3.2.3 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
CVE-2026-97469: Use of Weak Hash in DALIBO PostgreSQL Anonymizer
Description
PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to repeatedly call the anon.hash() function and collects (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt. A masked role can run a RESTRICTED function when the call is placed inside the sub-select. The problem is resolved in PostgreSQL Anonymizer 3.2.3 and later versions
CVSS v3.1
Score 4.3medium
Affected software
DALIBO
PostgreSQL Anonymizer
pkg:github/dalibo/postgresql_anonymizerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The PostgreSQL Anonymizer product from DALIBO has a vulnerability (CVE-2026-97469) where unprivileged masked users can repeatedly invoke the anon.hash() function to gather (seed, hash_output) pairs. This enables an offline brute-force attack to deduce the salt used in hashing. The vulnerability arises because a masked role can execute a RESTRICTED function within a sub-select call. The issue is resolved in PostgreSQL Anonymizer version 3.2.3 and later.
Potential Impact
An attacker with masked user privileges can perform offline brute-force attacks to deduce the salt used in the anon.hash() function. This could weaken the anonymization process by allowing partial recovery of hashed data. The CVSS score of 4.3 indicates a medium severity impact with limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade PostgreSQL Anonymizer to version 3.2.3 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-09-24T15:46:30.563Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab697d1f7a7c54106f62dca
Added to database: 09/25/2026, 15:48:33 UTC
Last enriched: 09/25/2026, 16:03:09 UTC
Last updated: 09/26/2026, 02:49:15 UTC
Views: 13
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