{"cve":"CVE-2021-3393","nvd":{"published":"2021-04-01T14:15:13.657","modified":"2026-06-17T04:05:01.073","status":"Modified","description":"An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-209"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1924005","https://security.gentoo.org/glsa/202105-32","https://security.netapp.com/advisory/ntap-20210507-0006/","https://bugzilla.redhat.com/show_bug.cgi?id=1924005","https://security.gentoo.org/glsa/202105-32"],"products":["postgresql:postgresql","redhat:enterprise_linux","redhat:software_collections"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-3393","score":0.01187,"percentile":0.6788,"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."]}