Vulnerability from bitnami_vulndb
Published
2026-01-26 14:43
Modified
2026-01-26 15:09
Summary
wsgiref.headers.Headers allows header newline injection
Details

User-controlled header names and values containing newlines can allow injecting HTTP headers.

To clipboard Create KEV Entry 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "libpython",
        "purl": "pkg:bitnami/libpython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.15.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/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",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-0865"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "User-controlled header names and values containing newlines can allow injecting HTTP headers.",
  "id": "BIT-libpython-2026-0865",
  "modified": "2026-01-26T15:09:56.435Z",
  "published": "2026-01-26T14:43:33.890Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/22e4d55285cee52bc4dbe061324e5f30bd4dee58"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/23e3c0ae867cca0130e441e776c9955b9027c510"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/2f840249550e082dc351743f474ba56da10478d2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/4802b96a2cde58570c24c13ef3289490980961c5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/e4846a93ac07a8ae9aa18203af0dd13d6e7a6995"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/f7fceed79ca1bceae8dbe5ba5bc8928564da7211"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/issues/143916"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/143917"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/BJ6QPHNSHJTS3A7CFV6IBMCAP2DWRVNT/"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0865"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "wsgiref.headers.Headers allows header newline injection"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.