alsa-2026:33512
Vulnerability from osv_almalinux
Published
2026-06-30 00:00
Modified
2026-07-01 13:41
Summary
Important: ruby security update
Details

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es):

  • ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments (CVE-2026-42258)
  • net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS (CVE-2026-42246)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "ruby"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.7-167.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
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        "name": "ruby-default-gems"
      },
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            {
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            }
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      ]
    },
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        "name": "ruby-devel"
      },
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            },
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        "name": "ruby-doc"
      },
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        {
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              "introduced": "0"
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            }
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      ]
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        "ecosystem": "AlmaLinux:9",
        "name": "ruby-libs"
      },
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        {
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              "introduced": "0"
            },
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          "type": "ECOSYSTEM"
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      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-bigdecimal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
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    {
      "package": {
        "ecosystem": "AlmaLinux:9",
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              "introduced": "0"
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    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-io-console"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.7-167.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-irb"
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      "ranges": [
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              "introduced": "0"
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          "type": "ECOSYSTEM"
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          "type": "ECOSYSTEM"
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      },
      "ranges": [
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-power_assert"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          "type": "ECOSYSTEM"
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      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-psych"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-rake"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13.0.3-167.el9_8"
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          "type": "ECOSYSTEM"
        }
      ]
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    {
      "package": {
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        "name": "rubygem-rbs"
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        "name": "rubygem-rdoc"
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              "introduced": "0"
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-rexml"
      },
      "ranges": [
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          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.5-167.el9_8"
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          ],
          "type": "ECOSYSTEM"
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      ]
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    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-rss"
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          "type": "ECOSYSTEM"
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        "name": "rubygem-test-unit"
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygem-typeprof"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
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    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygems"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
              "fixed": "3.2.33-167.el9_8"
            }
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "rubygems-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
              "fixed": "3.2.33-167.el9_8"
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          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.  \n\nSecurity Fix(es):  \n\n  * ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments (CVE-2026-42258)\n  * net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS (CVE-2026-42246)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:33512",
  "modified": "2026-07-01T13:41:43Z",
  "published": "2026-06-30T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:33512"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42246"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42258"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2468498"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2468499"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-33512.html"
    }
  ],
  "related": [
    "CVE-2026-42258",
    "CVE-2026-42246"
  ],
  "summary": "Important: ruby security update"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.