CVE-2026-14672: PostgreSQL observable response discrepancy with non-default scram_iterations provides user existence oracle
CSIRTS triage
- What
- Observable response discrepancy with non-default scram_iterations allows an attacker to enumerate valid usernames.
- Who is affected
- PostgreSQL instances with non-default scram_iterations configuration.
- Urgency
- Medium severity (CVSS 5.3); applicable to deployments using non-standard authentication settings.
- Action
- Update PostgreSQL and review scram_iterations configuration.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-14672
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-146720.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-14672 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] PostgreSQL: Multiple vulnerabilitiescert-bund
- unknownUSN-8653-1: PostgreSQL vulnerabilitiesubuntu
- unknownMultiple vulnerabilities in PostgreSQL (August 14, 2026)cert-fr-avis
- mediumCVE-2026-14672: Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated u…nvd
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