{"cve":"CVE-2020-24386","nvd":{"published":"2021-01-04T17:15:13.867","modified":"2026-06-17T03:05:28.477","status":"Modified","description":"An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8},"cwes":[],"references":["http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html","http://seclists.org/fulldisclosure/2021/Jan/18","http://www.openwall.com/lists/oss-security/2021/01/04/4","https://doc.dovecot.org/configuration_manual/hibernation/","https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html"],"products":["debian:debian_linux","dovecot:dovecot","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-24386","score":0.02784,"percentile":0.86397,"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."]}