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CVE-2026-40020

Estado: AnalizadaMedia (4.3)—

Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Dovecot — DovecotOpen-xchange — Dovecot

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-40020",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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          "version": "2.0.3",
          "timestamp": "2026-05-12T15:40:03.182471Z"
        }
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  "published": "2026-05-12T14:17:03.687",
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    }
  ],
  "lastModified": "2026-06-17T10:44:36.657",
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