{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.1.1"
              },
              {
                "fixed": "1.5.7-14"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3216860eea289fbbae0b191c0a4fd8b72dad949c"
            }
          ],
          "repo": "https://github.com/luben/zstd-jni",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jfr6-9xqw-2g2q"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87823.json"
  },
  "details": "zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.",
  "id": "CVE-2026-87823",
  "modified": "2026-09-10T03:30:42.746420064Z",
  "published": "2026-09-09T14:32:43.442Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87823.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/luben/zstd-jni"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/luben/zstd-jni/commit/46dcb2a54c8b8f2ce2cad7187a7513f509c533ac"
    },
    {
      "type": "FIX",
      "url": "https://github.com/luben/zstd-jni/commit/d7a1c99322d5e1fc71932e722c0b5bb2fc525d3f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87823"
    },
    {
      "type": "WEB",
      "url": "https://repo1.maven.org/maven2/com/github/luben/zstd-jni/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/zstd-jni-1.1.1-through-1.5.7-13-out-of-bounds-read-via-direct-bytebuffer-frame-size-methods"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods"
}