{"cve":"CVE-2023-5870","nvd":{"published":"2023-12-10T18:15:07.643","modified":"2026-06-17T06:49:33.403","status":"Modified","description":"A flaw was found in PostgreSQL involving the pg_cancel_backend 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","score":4.4},"cwes":["CWE-400"],"references":["https://access.redhat.com/errata/RHSA-2023:7545","https://access.redhat.com/errata/RHSA-2023:7579","https://access.redhat.com/errata/RHSA-2023:7580","https://access.redhat.com/errata/RHSA-2023:7581","https://access.redhat.com/errata/RHSA-2023:7616"],"products":["postgresql:postgresql","redhat:codeready_linux_builder_eus","redhat:codeready_linux_builder_eus_for_power_little_endian_eus","redhat:codeready_linux_builder_for_arm64_eus","redhat:codeready_linux_builder_for_ibm_z_systems_eus","redhat:codeready_linux_builder_for_power_little_endian_eus","redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_for_arm_64","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_tus","redhat:software_collections"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2023-5870","score":0.02555,"percentile":0.85058,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}