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CVE-2026-18408 is an untrusted data inclusion vulnerability in PostgreSQL dump and restore workflows. A malicious superuser on an origin PostgreSQL server can cause pg_dump output to contain input that is expanded by psql \restrict meta-command processing during restoration. Although \restrict and \unrestrict were introduced as part of the fix for CVE-2025-8714, the \unrestrict meta-command could itself be abused to bypass that protection. pg_dumpall is also affected, as is pg_restore when it generates plain-format dump output. PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
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No public exploit code observed for this vulnerability.
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28 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A PostgreSQL arbitrary-code-execution vulnerability involving inclusion of untrusted data in pg_dump.
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.
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.