A flaw was found in PostgreSQL involving the pgcancelbackend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.
{
"license": "CC-BY-4.0",
"sources": [
{
"modified": "2025-11-04T20:17:14.013Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5870",
"published": "2023-12-10T18:15:07.643Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-5870",
"imported": "2026-04-03T13:13:10.441Z",
"id": "CVE-2023-5870"
}
]
}