Name: CVE-2021-29157: Improper Limitation of a Pathname to a Restricted Directory
Creator: Rapid7
Published: 2021-06-28T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-29157, CWE-22, CVSS 7.5, EPSS 0.0047

Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver.

CVSS Details

CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade dovecot	Mar 26, 2024	Jun 28, 2021
Arch Linux	—	Upgrade to the latest version of Arch Linux	Jul 11, 2025	Jun 28, 2021
Debian	—	Upgrade dovecot	Jul 30, 2024	Jun 28, 2021
Freebsd	—	Upgrade dovecot	Nov 4, 2022	Jun 22, 2021
Gentoo Linux	—	Upgrade net-mail/dovecot.	Jul 19, 2021	Jun 28, 2021
Redhat_linux	—	No solution exists	Jul 9, 2025	Jun 28, 2021
Suse	—	Upgrade dovecot23-fts-luceneUpgrade dovecot23-backend-pgsqlUpgrade dovecot23-develUpgrade dovecot23-fts-solrUpgrade dovecot23-backend-sqliteUpgrade dovecot23-ftsUpgrade dovecot23-fts-squatUpgrade dovecot23Upgrade dovecot23-backend-mysql	Jun 23, 2021	Jun 21, 2021
Ubuntu	—	Upgrade dovecot-core	Jun 21, 2021	Jun 21, 2021

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence