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Search Results (6 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-0394 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 5.3 Medium |
| When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users. Upgrade to fixed version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known. | ||||
| CVE-2026-27860 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 3.7 Low |
| If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known. | ||||
| CVE-2026-27856 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 7.4 High |
| Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known. | ||||
| CVE-2026-27855 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 6.8 Medium |
| Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If authentication happens over unsecure connection, switch to SCRAM protocol. Alternatively ensure the communcations are secured, and if possible switch to OAUTH2 or SCRAM. No publicly available exploits are known. | ||||
| CVE-2026-24031 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 7.7 High |
| Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known. | ||||
| CVE-2025-59031 | 2 Dovecot, Open-xchange | 3 Dovecot, Dovecot, Ox Dovecot Pro | 2026-04-29 | 4.3 Medium |
| Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known. | ||||
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