{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "6.2.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26c2eac360033458e9d266e5e30667d1f8d642e3"
            },
            {
              "fixed": "e1fc278734ad62f933fc6f91edb29e4ba732f402"
            }
          ],
          "repo": "https://github.com/radareorg/radare2",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-96m5-hvwp-674c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81883.json"
  },
  "details": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Lua 5.3 bytecode function parser was vulnerable because the Lua 5.3 bytecode function parser read fixed function-metadata fields immediately after a function-name string without checking the remaining buffer length. The vulnerability is triggered by opening or inspecting a crafted Lua 5.3 bytecode file whose function-name string ends at the input-buffer boundary. The parser read two integers and three one-byte fields beyond the allocated input buffer. This can cause invalid parser results or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.",
  "id": "CVE-2026-81883",
  "modified": "2026-09-25T03:31:14.798529862Z",
  "published": "2026-09-22T15:14:47.022Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81883.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-96m5-hvwp-674c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81883"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/radareorg/radare2/issues/26228"
    },
    {
      "type": "FIX",
      "url": "https://github.com/radareorg/radare2/commit/26c2eac360033458e9d266e5e30667d1f8d642e3"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "radare2: Out-of-bounds Read at the end of string in the LUA 5.3 bytecode"
}