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Search Results (25 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-42395 | 1 Open-xchange | 2 Ox Dovecot Ce, Ox Dovecot Pro | 2026-09-01 | 4.3 Medium |
| A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies are not affected. Restrict the list of trusted proxy networks to hosts that are fully under your control. Update to non-vulnerable version. No publicly available exploits are known. | ||||
| CVE-2026-52681 | 1 Open-xchange | 2 Ox Dovecot Ce, Ox Dovecot Pro | 2026-09-01 | 3.1 Low |
| Sieve CPU resource usage is tracked in the compiled script, so an attacker that has valid credentials can reset the accounting by repeatedly changing the active script. Compiled script files are also not removed when a script is deleted or renamed. The configured Sieve CPU limit can be bypassed, allowing sustained CPU consumption, and the leftover files increase disk consumption. Both can cause degradation of service for mail delivery. Monitor system for abnormal CPU usage and disk consumption. Update to non-vulnerable version. No publicly available exploits are known. | ||||
| CVE-2026-52687 | 1 Open-xchange | 2 Ox Dovecot Ce, Ox Dovecot Pro | 2026-09-01 | 6.5 Medium |
| An attacker that has valid credentials can select a compression algorithm for the IMAP connection whose decompression state requires a large amount of memory, and open several such connections. The memory limit of the process is reached with only a few connections, terminating the process and all connections it handles, which can cause degradation or denial of service for IMAP. Disable IMAP compression. Alternatively limit the number of connections handled by a single imap-login process, though this has a performance impact. Update to non-vulnerable version. No publicly available exploits are known. | ||||
| CVE-2026-73208 | 1 Open-xchange | 2 Ox Dovecot Ce, Ox Dovecot Pro | 2026-09-01 | 7.4 High |
| An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token response does not contain a scope claim, the audience claim is used in its place and checked against the configured required scopes. These are different concepts, and the audience claim does not describe what a token is allowed to do. A token that grants no relevant permissions can be accepted because its intended recipient value happens to match a configured scope name, granting access that should have been denied. It also hides an identity provider misconfiguration where scopes are not being issued at all. Ensure the identity provider issues a scope claim for all tokens used with Dovecot, and that configured scope names do not match audience values. Update to non-vulnerable version. No publicly available exploits are known. | ||||
| CVE-2026-73209 | 1 Open-xchange | 2 Ox Dovecot Ce, Ox Dovecot Pro | 2026-09-01 | 6.5 Medium |
| An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known. | ||||