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CVE-2026-27857

🗓️ 27 Mar 2026 08:10:20Reported by OXType 
cve
 cve
🔗 web.nvd.nist.gov👁 44 Views

CVE-2026-27857 enables memory exhaustion by NOOP with many parentheses; each connection uses ~1MB.

Related
Detection
Affected
Refs
NVD
Node
OR
dovecotdovecotRange<2.4.3
open-xchangedovecotRange<2.3.22.1pro
open-xchangedovecotRange3.0.03.0.5pro
open-xchangedovecotRange3.1.03.1.4pro
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "core"
    ],
    "product": "OX Dovecot Pro",
    "vendor": "Open-Xchange GmbH",
    "versions": [
      {
        "lessThanOrEqual": "2.3.0",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      }
    ]
  }
]

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15 Jul 2026 02:19Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
EPSS0.00667
SSVC
44