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    "aggregate_severity": {
      "text": "Low"
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      "text": "TuxCare License Agreement",
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        "label": "WHITE",
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      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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        "text": "CVE-2026-42006: lib-imap: fix list_count_limit to actually count open '(' instead of close ')', preventing an imap-login memory-exhaustion DoS that bypassed the CVE-2026-27857 fix",
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      "initial_release_date": "2026-05-21T15:50:11Z",
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          "date": "2026-05-21T15:50:11Z",
          "number": "1",
          "summary": "Initial version"
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      "version": "1"
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        "relates_to_product_reference": "Oracle-Linux-6"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-42006",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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        "known_affected": [
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-42006"
        },
        {
          "category": "external",
          "summary": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json",
          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json"
        }
      ],
      "release_date": "2026-05-12T14:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-21T15:49:36.999708Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1779378574",
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        },
        {
          "category": "none_available",
          "date": "2026-05-12T14:17:00Z",
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        {
          "category": "impact",
          "details": "Low"
        }
      ]
    }
  ]
}