{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:vshakitskiy:ewe:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.0.6"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9f26359becaf1b6c05f60571df9e22b08d7eddfe"
            },
            {
              "fixed": "ce4ff214d32626a10fda9398dc94a2d720e17446"
            }
          ],
          "repo": "https://github.com/vshakitskiy/ewe",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x2w3-23jr-hrpf"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-113"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34715.json"
  },
  "details": "ewe is a Gleam web server. Prior to version 3.0.6, the encode_headers function in src/ewe/internal/encoder.gleam directly interpolates response header keys and values into raw HTTP bytes without validating or stripping CRLF (\\r\\n) sequences. An application that passes user-controlled data into response headers (e.g., setting a Location redirect header from a request parameter) allows an attacker to inject arbitrary HTTP response content, leading to response splitting, cache poisoning, and possible cross-site scripting. Notably, ewe does validate CRLF in incoming request headers via validate_field_value() in the HTTP/1.1 parser — but provides no equivalent protection for outgoing response headers in the encoder. This issue has been patched in version 3.0.6.",
  "id": "CVE-2026-34715",
  "modified": "2026-07-08T05:36:10.635553647Z",
  "published": "2026-04-02T17:57:00.501Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vshakitskiy/ewe/releases/tag/v3.0.6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34715.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vshakitskiy/ewe/security/advisories/GHSA-x2w3-23jr-hrpf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34715"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vshakitskiy/ewe/commit/ce4ff214d32626a10fda9398dc94a2d720e17446"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ewe Has Improper Neutralization of CRLF Sequences in HTTP Headers (HTTP Request/Response Splitting)"
}