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CVE-2026-14672 is an observable response discrepancy in PostgreSQL SCRAM authentication. For an existing role whose SCRAM verifier uses a non-default scram_iterations value, the authentication challenge reveals that role-specific iteration count; a nonexistent role receives a challenge using the default iteration count. An unauthenticated remote party can compare these responses to determine whether a selected username exists. PostgreSQL 16 through 18 are affected before 16.15, 17.11, and 18.6, respectively; versions before PostgreSQL 16 are unaffected.
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No public exploit code observed for this vulnerability.
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17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A network-accessible PostgreSQL vulnerability that requires no privileges or user interaction and can result in low-impact confidentiality disclosure. The provided content does not specify the underlying flaw mechanism.
A PostgreSQL authentication side-channel that can reveal whether a user exists when non-default scram_iterations are configured.
A PostgreSQL authentication-information disclosure issue that enables a user-existence oracle when non-default SCRAM iteration settings are used.
A PostgreSQL authentication information-disclosure flaw where response differences under non-default scram_iterations reveal whether users exist.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.