{"id":"CVE-2026-105617","kind":"vulnerability","aliases":["CVE-2026-105617"],"related":[],"title":"PostgreSQL Anonymizer: cached plans keep showing unmasked data after rule changes","description":"PostgreSQL Anonymizer doesn't invalidate plans prepared after a rule was added or a role changed. Users using such plans can still see the unmasked data until the end of the session. The problem is resolved in PostgreSQL Anonymizer 3.3.0 and later versions.","summary":"PostgreSQL Anonymizer does not invalidate query plans prepared after a masking rule was added or a role was changed. A user with such a prepared plan can keep seeing unmasked data until the session ends.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","postgresql","postgresql-anonymizer","self-hosted"],"not_affected_if":["default-config"],"how_to_check":"- Check the installed extension version with `SELECT extversion FROM pg_extension WHERE extname = 'anon';`\n- Look for long-lived sessions or connection pools that prepare statements against masked tables","fix":"- Upgrade PostgreSQL Anonymizer to `3.3.0` or later\n- Reconnect sessions (or restart the pool) after upgrading so old prepared plans are discarded","status":"open","published_at":"2026-10-28T18:17:03+00:00","first_seen_at":"2026-10-28T18:34:32+00:00","triaged_at":"2026-10-28T18:35:03+00:00","updated_at":"2026-10-28T18:35:03+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-28T18:35:03Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade PostgreSQL Anonymizer to `3.3.0` or later\n- Reconnect sessions (or restart the pool) after upgrading so old prepared plans are discarded","reach":"local","title":"PostgreSQL Anonymizer: cached plans keep showing unmasked data after rule changes","impact":"medium","summary":"PostgreSQL Anonymizer does not invalidate query plans prepared after a masking rule was added or a role was changed. A user with such a prepared plan can keep seeing unmasked data until the session ends.","category":"package","nicknames":[],"who_cares":["postgresql","postgresql-anonymizer","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Masked data stays visible to users in the same session.","analyst_note":"","how_to_check":"- Check the installed extension version with `SELECT extversion FROM pg_extension WHERE extname = 'anon';`\n- Look for long-lived sessions or connection pools that prepare statements against masked tables","needs_analyst":false,"not_affected_if":["default-config"],"who_is_affected":"Deployments that use PostgreSQL Anonymizer to mask data for roles, especially where applications use prepared statements or connection pooling and sessions stay open for a long time. Databases that do not use the anon extension for masking are not affected.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000584,"input_tokens":3310,"output_tokens":505,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-105617':14A,17A '-2026':13A,16A '3.3.0':100C 'add':39B,72C 'anonym':2A,22B,27B,62C,99C 'cach':3A 'chang':11A,44B,76C 'cve':12A,15A 'data':8A,56B,86C 'doesn':63C 'end':60B,89C 'host':25B 'invalid':30B,65C 'keep':5A,53B 'later':102C 'mask':36B 'packag':18B 'plan':4A,32B,51B,66C,80C 'postgresql':1A,19B,21B,26B,61C,98C 'postgresql-anonym':20B 'prepar':33B,50B,67C 'problem':94C 'queri':31B 'resolv':96C 'role':42B,75C 'rule':10A,37B,70C 'see':54B,83C 'self':24B 'self-host':23B 'session':59B,92C 'show':6A 'still':82C 'unmask':7A,55B,85C 'use':78C 'user':46B,77C 'version':103C","nicknames":[],"mitigations":[],"who_affected":"Deployments that use PostgreSQL Anonymizer to mask data for roles, especially where applications use prepared statements or connection pooling and sessions stay open for a long time. Databases that do not use the anon extension for masking are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T18:17:03+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-105617","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105617","severity":null,"published_at":"2026-10-28T18:17:03+00:00","modified_at":"2026-10-28T18:17:03+00:00","first_seen_at":"2026-10-28T18:34:32+00:00","fetched_at":"2026-10-28T18:34:32+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}