{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-42245",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-04-25T05:37:12.118Z",
        "datePublished": "2026-05-09T19:37:08.905Z",
        "dateUpdated": "2026-05-12T18:30:58.415Z"
    },
    "containers": {
        "cna": {
            "title": "net-imap: Quadratic complexity when reading response literals",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-407",
                            "lang": "en",
                            "description": "CWE-407: Inefficient Algorithmic Complexity",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 2.3,
                        "baseSeverity": "LOW",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/ruby/net-imap/security/advisories/GHSA-q2mw-fvj9-vvcw",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/ruby/net-imap/security/advisories/GHSA-q2mw-fvj9-vvcw"
                },
                {
                    "name": "https://github.com/ruby/net-imap/commit/6091f7d6b1f3514cafbfe39c76f2b5d73de3ca96",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/commit/6091f7d6b1f3514cafbfe39c76f2b5d73de3ca96"
                },
                {
                    "name": "https://github.com/ruby/net-imap/commit/88d95231fc8afef11c1f074453f7d75b68c9dfda",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/commit/88d95231fc8afef11c1f074453f7d75b68c9dfda"
                },
                {
                    "name": "https://github.com/ruby/net-imap/commit/de685f91a4a4cc75eb80da898c2bf8af08d34819",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/commit/de685f91a4a4cc75eb80da898c2bf8af08d34819"
                },
                {
                    "name": "https://github.com/ruby/net-imap/releases/tag/v0.4.24",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/releases/tag/v0.4.24"
                },
                {
                    "name": "https://github.com/ruby/net-imap/releases/tag/v0.5.14",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/releases/tag/v0.5.14"
                },
                {
                    "name": "https://github.com/ruby/net-imap/releases/tag/v0.6.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ruby/net-imap/releases/tag/v0.6.4"
                }
            ],
            "affected": [
                {
                    "vendor": "ruby",
                    "product": "net-imap",
                    "versions": [
                        {
                            "version": "< 0.4.24",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.5.0, < 0.5.14",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.6.0, < 0.6.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-05-09T19:37:08.905Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4."
                }
            ],
            "source": {
                "advisory": "GHSA-q2mw-fvj9-vvcw",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-12T17:53:55.917796Z",
                                "id": "CVE-2026-42245",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-05-12T18:30:58.415Z"
                }
            }
        ]
    }
}