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CVE-2026-16239 is a type-confusion vulnerability in PostgreSQL portal and cursor lifecycle management. An authenticated database user can trigger the flaw by closing and recreating a cursor or other portal with differing types, causing PostgreSQL to mishandle the portal state. This can result in arbitrary code execution as the operating-system account running the PostgreSQL server. Affected releases are PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
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 PostgreSQL vulnerability referenced by the plugin; no technical vulnerability details are provided.
A PostgreSQL cursor CLOSE plus DECLARE type-confusion vulnerability that can execute arbitrary code.
A PostgreSQL cursor CLOSE plus DECLARE type-confusion vulnerability that can execute arbitrary code.
A PostgreSQL cursor CLOSE plus DECLARE type-confusion flaw that can execute arbitrary code.
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.