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CVE-2026-18408 is an inclusion-of-functionality-from-an-untrusted-control-sphere vulnerability in PostgreSQL dump and restore workflows. A superuser on the origin PostgreSQL server can craft dump output that abuses psql \restrict meta-command input expansion. The \restrict and \unrestrict protections introduced for CVE-2025-8714 were incomplete because \unrestrict could itself be used to re-enable the unsafe behavior. When the resulting plain-format dump is restored with psql, attacker-controlled content can execute as the client operating-system account running psql. pg_dumpall is also affected, as is pg_restore when it is used to generate plain-format dump output. Affected versions are PostgreSQL releases before 18.6, 17.11, 16.15, 15.19, and 14.24.
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A PostgreSQL vulnerability referenced by the plugin; no technical vulnerability details are provided.
A PostgreSQL psql \unrestrict flaw enabling a pg_dump origin-server superuser to execute arbitrary code in a psql client.
A psql vulnerability allowing a superuser of a pg_dump origin server to execute arbitrary code in the psql client via \unrestrict.
A PostgreSQL psql flaw where use of \unrestrict can allow a superuser on the pg_dump origin server to execute arbitrary code in the psql client.
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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.