CVE-2026-27856
Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine
CVSS
7.4
Alto
EPSS
0.4%
p33
KEV
—
Exploit Today
10
0-100
Publicado: 27 mar 2026 · Última mod.: 15 jul 2026 · CWE-287 · CWE-208
0.4%EPSS · 30 días0.4%
2026-08-242026-09-21
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.
- documentation.open-xchange.comhttps://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26564
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-27856
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2452171
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27856.json
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-952717.3 ALT—
———A vulnerability has been found in dgtlmoon changedetection.io up to 0.60.7. The impacted element is the function check_authentication of the file changedetectionio/flask_app.py of the component Authentication Hook. Such manipulation leads to improper authentication. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.6hCVE-2026-952703.7 BAJ—
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——0Tinyauth is an authentication and authorization server. Prior to 5.1.0, Tinyauth exposes a remotely observable timing difference between authentication attempts for existing and nonexistent local usernames. internal/controller/user_controller.go loginHandler and internal/middleware/context_middleware.go basicAuth return quickly after internal/service/auth_service.go reports a missing user, while an existing user causes bcrypt password verification work. Repeated measurements can therefore disclose valid usernames and support targeted credential attacks. This issue is fixed in version 5.1.0.1dCVE-2026-616877.1 ALT—
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