{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "fff06efe3be962b484bd4d3eb339372fda5a231f"
                  },
                  {
                    "fixed": "220b9dfd27f9a21305be2afc75cbe585ddc24e7a"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "1.4.0"
                  },
                  {
                    "fixed": "1.14.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "fff06efe3be962b484bd4d3eb339372fda5a231f"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "220b9dfd27f9a21305be2afc75cbe585ddc24e7a"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "fff06efe3be962b484bd4d3eb339372fda5a231f"
            },
            {
              "fixed": "220b9dfd27f9a21305be2afc75cbe585ddc24e7a"
            },
            {
              "introduced": "e5d4262b07b3e1026c57647b281dccfababea13b"
            },
            {
              "fixed": "220b9dfd27f9a21305be2afc75cbe585ddc24e7a"
            },
            {
              "fixed": "fff06efe3be962b484bd4d3eb339372fda5a231f"
            }
          ],
          "repo": "https://github.com/mtrudel/bandit",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-p2qv-vx88-385x"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-770",
      "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115269.json"
  },
  "details": "Allocation of Resources Without Limits or Throttling vulnerability in the HTTP/2 request body reader of mtrudel bandit allows an unauthenticated remote attacker to hold stream processes open indefinitely via WINDOW_UPDATE or empty SETTINGS frames sent while a Plug reads the request body.\n\nBandit.HTTP2.Stream.do_read_data/4 in lib/bandit/http2/stream.ex waits for each frame with a fresh read_timeout. A stream WINDOW_UPDATE, or the zero-delta window update that every empty SETTINGS frame delivers to all streams, ends the wait without delivering any body data, and the loop starts a new full countdown. A client that sends one of these 9-byte frames before each countdown expires keeps read_body blocked, together with the stream process and whatever the application holds while reading, for as long as it likes.\n\nThis issue affects bandit: from 1.4.0 before 1.14.0.",
  "id": "CVE-2026-115269",
  "modified": "2026-10-28T02:31:00.535185259Z",
  "published": "2026-10-26T13:30:24.621Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-115269.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-115269"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115269.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/mtrudel/bandit/security/advisories/GHSA-p2qv-vx88-385x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115269"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mtrudel/bandit/commit/fff06efe3be962b484bd4d3eb339372fda5a231f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mtrudel/bandit"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "HTTP/2 WINDOW_UPDATE and SETTINGS frames reset the request body read timeout in Bandit"
}