CVE-2026-32881 (GCVE-0-2026-32881)
Vulnerability from cvelistv5
Published
2026-03-20 01:18
Modified
2026-03-20 20:03
CWE
  • CWE-183 - Permissive List of Allowed Inputs
Summary
ewe is a Gleam web server. ewe is a Gleam web server. Versions 0.6.0 through 3.0.4 are vulnerable to authentication bypass or spoofed proxy-trust headers. Chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9 header names. A malicious client can exploit this by declaring these headers in the Trailer field and appending them after the final chunk, causing request.set_header to overwrite legitimate values (e.g., those set by a reverse proxy). This enables attackers to forge authentication credentials, hijack sessions, bypass IP-based rate limiting, or spoof proxy-trust headers in any downstream middleware that reads headers after ewe.read_body is called. This issue has been fixed in version 3.0.5.
Impacted products
Vendor Product Version
vshakitskiy ewe Version: >= 0.6.0, < 3.0.5
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Show details on NVD website


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