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CVE-2026-56866 affecting package tensorflow 2.16.1-11

Type: advisorySources: OSV

When http.Transport sends an HTTP/1 CONNECT request with a non-empty Request.Body, it writes the body directly to the connection without framing after the request headers. If the server rejects the CONNECT request with a non-2xx keep-alive response, Transport returns the connection to the idle pool. Because CONNECT requests do not have a request body, the server may interpret the trailing body bytes as a subsequent pipelined HTTP/1.1 request on the connection, leaving the pooled connection desynchronized and causing the next caller that reuses it to read the response to the injected request. In reverse proxies (including httputil.ReverseProxy) that forward CONNECT requests through a shared Transport, this can lead to cross-user response poisoning.

Products
tensorflow
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-56866
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 14:06 UTC · Revision 1

Source evidence

CVE-2026-56866 affecting package tensorflow 2.16.1-11

core-osv · Original source

Published 8 Oct 2026, 23:17 UTC

When http.Transport sends an HTTP/1 CONNECT request with a non-empty Request.Body, it writes the body directly to the connection without framing after the request headers. If the server rejects the CONNECT request with a non-2xx keep-alive response, Transport returns the connection to the idle pool. Because CONNECT requests do not have a request body, the server may interpret the trailing body bytes as a subsequent pipelined HTTP/1.1 request on the connection, leaving the pooled connection desynchronized and causing the next caller that reuses it to read the response to the injected request. In reverse proxies (including httputil.ReverseProxy) that forward CONNECT requests through a shared Transport, this can lead to cross-user response poisoning.

osv:AZL-107928

tensorflow

Fixed versions: Not specified

Complete source record
{
  "id": "135bb7b69ba09a71febe067a64aa7dcc8670ea4b96571b530bf2dc22e64eeeb1",
  "url": "https://osv.dev/vulnerability/AZL-107928",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-56866 affecting package tensorflow 2.16.1-11",
    "summary": "When http.Transport sends an HTTP/1 CONNECT request with a non-empty Request.Body, it writes the body directly to the connection without framing after the request headers. If the server rejects the CONNECT request with a non-2xx keep-alive response, Transport returns the connection to the idle pool. Because CONNECT requests do not have a request body, the server may interpret the trailing body bytes as a subsequent pipelined HTTP/1.1 request on the connection, leaving the pooled connection desynchronized and causing the next caller that reuses it to read the response to the injected request. In reverse proxies (including httputil.ReverseProxy) that forward CONNECT requests through a shared Transport, this can lead to cross-user response poisoning.",
    "evidence": "osv:AZL-107928",
    "products": [
      {
        "name": {
          "value": "tensorflow",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-107928",
      "aliases": [
        "AZL-107928"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2.16.1-11"
                }
              ]
            }
          ],
          "package": {
            "name": "tensorflow",
            "purl": "pkg:rpm/azure-linux/tensorflow",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-107928.json"
          }
        }
      ],
      "modified": "2026-10-15T05:37:09Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-56866"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56866"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-56866",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 321507,
  "published_at": "2026-10-08T23:17:01+00:00"
}