October 30, 2026

CVE Watchtower

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CVE-2026-6478NVD

Vulnerability Summary

Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate. This does not affect scram-sha-256 passwords, the default in all supported releases. However, current databases may have MD5-hashed passwords originating in upgrades from PostgreSQL 13 or earlier. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
Severity Level
MEDIUM(6.5)
Published Date
May 14, 2026
Last Modified
Aug 25, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.56%Probability
Root Weakness (CWE)
CWE-385: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

Affected & Patched Versions

Affected Versions
  • Postgresql Postgresql < 14.23
  • Postgresql Postgresql >= 15.0 and < 15.18
  • Postgresql Postgresql >= 16.0 and < 16.14
  • Postgresql Postgresql >= 17.0 and < 17.10
  • Postgresql Postgresql >= 18.0 and < 18.4
Patched Versions
  • Postgresql Postgresql 14.23
  • Postgresql Postgresql 15.18
  • Postgresql Postgresql 16.14
  • Postgresql Postgresql 17.10
  • Postgresql Postgresql 18.4
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References