{"apiVersion":"1.0","identifier":"CVE-2026-42008","description":"Forwarding information received from a host listed as a trusted proxy is not kept separate from Dovecot-s own authentication fields, so a value sent by that host can be injected as an internal authentication field. Any host permitted to act as a trusted proxy can authenticate as any user without knowing that user-s password. This affects deployments whose password database honours a field that permits authentication without a password. 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.","publishedAt":"2026-08-28T12:16:29","lastModifiedAt":"2026-08-28T12:16:29","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42008","cvssScore":4.3,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","epssProbability":0,"riskScore":0.43,"affectedProduct":"Dovecot","affectedVersions":"unknown","vulnerabilityType":"Other","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-42008","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-42008","en":"https://www.redsauce.net/en/cves/CVE-2026-42008","fr":"https://www.redsauce.net/fr/cves/CVE-2026-42008","pt":"https://www.redsauce.net/pt/cves/CVE-2026-42008","de":"https://www.redsauce.net/de/cves/CVE-2026-42008","sk":"https://www.redsauce.net/sk/cves/CVE-2026-42008","el":"https://www.redsauce.net/el/cves/CVE-2026-42008"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-42008"}}