Apache Thrift: Python `TZlibTransport` stops enforcing its decompressed-size limit once the limit is exactly used up

{
  "id": "9d34a79d1597a1b8e8223dc6b6a96e3b13950ab68e92cd1f6025b7b152fb76d6",
  "url": "https://osv.dev/vulnerability/BIT-thrift-2026-94636",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Thrift: Python `TZlibTransport` stops enforcing its decompressed-size limit once the limit is exactly used up",
    "summary": "Improper handling of highly compressed data (data amplification), Function call with incorrectly specified arguments, Improper validation of specified quantity in input vulnerability in Apache Thrift py bindings. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.",
    "evidence": "osv:BIT-thrift-2026-94636",
    "products": [
      {
        "name": {
          "value": "thrift",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.25.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "BIT-thrift-2026-94636",
      "aliases": [
        "BIT-thrift-2026-94636",
        "CVE-2026-94636"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.25.0"
                }
              ]
            }
          ],
          "package": {
            "name": "thrift",
            "purl": "pkg:bitnami/thrift",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V4",
              "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/thrift/BIT-thrift-2026-94636.json"
          }
        }
      ],
      "modified": "2026-10-09T12:00:11.588849434Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread/1rpq0d0g6yzjjzl1z27lwmvhzkn6rbrs",
        "https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-94636"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:apache:thrift:*:*:*:*:*:python:*:*"
        ],
        "severity": "High"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-94636",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 120685,
  "published_at": "2026-10-09T10:53:23.643+00:00"
}