CVE-2026-88383 (GCVE-0-2026-88383)

Vulnerability from cvelistv5 – Published: 2026-09-24 00:00 – Updated: 2026-09-24 16:32
VLAI
Summary
libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
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      "descriptions": [
        {
          "lang": "en",
          "value": "libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service."
        }
      ],
      "problemTypes": [
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            {
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      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:32:24.149Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
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      "references": [
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          "url": "https://github.com/libical/libical/issues/1361"
        },
        {
          "url": "https://github.com/libical/libical/pull/1363"
        },
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          "url": "https://github.com/libical/libical/pull/1363/changes/557d9c043733b33a8511dce41fdeeb508460d5a9"
        }
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  "cveMetadata": {
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    "assignerShortName": "mitre",
    "cveId": "CVE-2026-88383",
    "datePublished": "2026-09-24T00:00:00.000Z",
    "dateReserved": "2026-09-10T00:00:00.000Z",
    "dateUpdated": "2026-09-24T16:32:24.149Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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      "date": "2026-09-25",
      "epss": "0.00166",
      "percentile": "0.05192"
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        "descriptions": [
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            "value": "libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service."
          }
        ],
        "id": "CVE-2026-88383",
        "lastModified": "2026-09-24T21:04:40.340",
        "metrics": {},
        "published": "2026-09-24T17:17:07.787",
        "references": [
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            "source": "cve@mitre.org",
            "url": "https://github.com/libical/libical/issues/1361"
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            "url": "https://github.com/libical/libical/pull/1363"
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        "vulnStatus": "Awaiting Analysis"
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      "current_release_date": "2026-09-25T06:01:53+00:00",
      "cve": "CVE-2026-88383",
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      "product_status:known_affected": "20",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libical: libical: Denial of Service via crafted iCalendar property parsing",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88383.json",
      "version": "3"
    }
  }
}



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