{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.0.6"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9cfca65c122fa23b9680a28e0c9225a2fd015fc5"
            },
            {
              "fixed": "d753885ce2de7c105d6b8c405aa7aee1d98ad8de"
            }
          ],
          "repo": "https://github.com/libical/libical",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111269.json"
  },
  "details": "libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.",
  "id": "CVE-2026-111269",
  "modified": "2026-10-17T02:30:35.216069672Z",
  "published": "2026-10-15T21:43:16.966Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111269.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111269"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-string"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libical/libical/pull/1455"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libical/libical"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645"
    },
    {
      "type": "ARTICLE",
      "url": "https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string"
}