{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-111269",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-26T13:52:54.942387Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-26T14:15:58.734Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/libical/libical",
          "product": "libical",
          "repo": "https://github.com/libical/libical",
          "vendor": "libical",
          "versions": [
            {
              "lessThanOrEqual": "4.0.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:libical_project:libical:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "4.0.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "alepacheco"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
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          "format": "CVSS"
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            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T21:43:16.966Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read"
        },
        {
          "tags": [
            "patch",
            "issue-tracking"
          ],
          "url": "https://github.com/libical/libical/pull/1455"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/libical/libical"
        },
        {
          "name": "VulnCheck Advisory: libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-string"
        }
      ],
      "title": "libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-111269",
    "datePublished": "2026-10-15T21:43:16.966Z",
    "dateReserved": "2026-10-15T19:33:18.967Z",
    "dateUpdated": "2026-10-26T14:15:58.734Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}