Read the docs

Protection mechanism failure in PostgreSQL Anonymizer leaks anonymized data

Priority LOW 28CWE-693Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-693.

Summary

PostgreSQL Anonymizer from DALIBO, versions from 1 before 3.3.0, has a protection mechanism failure (CWE-693) in anonymization functions defined with SQL-standard function bodies. PostgreSQL checks these functions at declaration time, while Anonymizer only checks them at execution time. Any user with the TEMPORARY privilege can exploit this flaw to leak anonymized data.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

PostgreSQL Anonymizer contains a vulnerability related to anonymization functions defined using SQL-standard function bodies. PostgreSQL analyses such functions at declaration time, while Anonymizer only attempts to check them at execution time. This problem can be exploited by any user with the TEMPORARY privilege. The issue is fixed in PostgreSQL Anonymizer 3.3.0 and later versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0027 19th percentileScored 2026-11-07
Fix Fixed PostgreSQL Anonymizer (DALIBO): 3.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DALIBOPostgreSQL Anonymizer1 to before 3.3.03.3.0Patch availableCNA
  • PostgreSQL Anonymizer VendorDALIBO Affected 1 to before 3.3.0 Fixed in 3.3.0 Patch available CNA

Remediation

Upgrade PostgreSQL Anonymizer to version 3.3.0 or later, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA PostgreSQL Anonymizer (DALIBO) Fixed in 3.3.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    DALIBO PostgreSQL Anonymizer 3.3.0

    12 records Highest priority Priority LOW 12 LOW

    Other records, highest priority first

    • TI-2026-82101 PostgreSQL Anonymizer: masked role reads real data via sub-query rulePriority LOW 28
    • TI-2026-82099 PostgreSQL Anonymizer skips masking for queries through parent tablesPriority LOW 25
    • TI-2026-82098 Cached plans expose unmasked data in PostgreSQL AnonymizerPriority LOW 25

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-110181
  2. 2026-10-28 Alias added: GHSA-w66q-cxj5-99hv
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-05 CISA SSVC decision points changed

References

  • TI-2025-05130 Cursor allows PostgreSQL Anonymizer masked user to gain unauthorized access to authentic data CVSS 3.1MEDIUM 6.5
  • TI-2026-15944 PostgreSQL Anonymizer: unprivileged masked users can execute code via operators, domain casts and view subqueries CVSS 3.1HIGH 8.8
  • TI-2024-02174 Improper Input Validation in PostgreSQL Anonymizer 1.2 allows table owner to gain superuser privileges via masking rule CVSS 3.1HIGH 8.8
  • TI-2026-08447 PostgreSQL Anonymizer: malicious column name allows SQL injection via anon.k_anonymity() function CVSS 3.1HIGH 8.8
  • TI-2026-01997 Uncontrolled search path in DALIBO PostgreSQL Anonymizer CVSS 3.1HIGH 8.0
  • TI-2026-01996 Uncontrolled search path in DALIBO PostgreSQL Anonymizer CVSS 3.1HIGH 8.0
See all 23 →

Sources