zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)

{
  "id": "ab93162e12badd8a262f3da40f89a6fd9fc776eab6b6cb463a260dcb52d73428",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-115908",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)",
    "summary": "zip is a zip library for Rust that supports reading and writing simple ZIP files. From 7.2.0 until 9.0.0, ZipArchive::extract and ZipArchive::extract_unwrapped_root_dir use safe_prepare_path in src/read/zipfile.rs and simplified_components in src/path.rs to validate symbolic link targets with a lexical prefix comparison rather than resolving each intermediate link. An attacker who knows or can guess the absolute extraction destination can create a chain whose apparent target remains under the destination while an intermediate symlink resolves outside it, allowing attacker-controlled files to be created or overwritten with the extracting process's privileges. On Windows, discarded drive and UNC prefixes can permit a single-link escape when the process has SeCreateSymbolicLinkPrivilege, such as through administrator rights or Developer Mode. This regression is distinct from CVE-2025-29787. This issue is fixed in version 9.0.0.",
    "evidence": "cve:CVE-2026-115908",
    "products": [
      {
        "name": {
          "value": "zip2",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-115908",
      "aliases": [
        "CVE-2026-115908"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 7.4,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        }
      ],
      "affected": [
        {
          "vendor": "zip-rs",
          "product": "zip2",
          "versions": [
            {
              "status": "affected",
              "version": ">= 7.2.0, < 9.0.0"
            }
          ]
        }
      ],
      "modified": "2026-10-26T19:36:11.803Z",
      "provider": "cve",
      "references": [
        "https://github.com/zip-rs/zip2/security/advisories/GHSA-hjqx-j4rw-g7xv",
        "https://github.com/zip-rs/zip2/commit/09c030eab56e8db8fb3c1c33f554407b30bad8fa",
        "https://github.com/zip-rs/zip2/releases/tag/v9.0.0"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-115908",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T19:29:37.466263Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T19:36:11.803Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-26T16:34:29.328Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115908",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 338253,
  "published_at": "2026-10-26T16:34:29.328+00:00"
}