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CVE-2026-42198 is a client-side denial-of-service vulnerability in the PostgreSQL JDBC driver (pgjdbc) affecting versions 42.2.0 through 42.7.10. During SCRAM-SHA-256 authentication, a malicious PostgreSQL server can supply an excessively large SCRAM iteration count. pgjdbc passes this value to PBKDF2 without an effective upper limit, causing the client to consume CPU for an unbounded period before authentication fails. The issue is exacerbated because expiration of loginTimeout can return control to the caller while the worker thread continues the PBKDF2 computation.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
26 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A client-side denial-of-service vulnerability in the PostgreSQL JDBC driver (pgjdbc) that can be triggered through malicious SCRAM-SHA-256 authentication. It affects the postgresql-jdbc package on Red Hat Enterprise Linux 8.
A network-reachable, low-complexity client-side denial-of-service vulnerability in pgjdbc's handling of malicious SCRAM-SHA-256 authentication. It affects the PostgreSQL JDBC driver packages on Red Hat Enterprise Linux 8.
A client-side denial-of-service vulnerability in the PostgreSQL JDBC driver (pgjdbc) triggered through malicious SCRAM-SHA-256 authentication.
A client-side denial-of-service vulnerability in the PostgreSQL JDBC driver (pgjdbc), triggered through malicious SCRAM-SHA-256 authentication.
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.