Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect

Summary Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex...

EUVD-2026-18378

Rack has quadratic complexity in Rack::Utils.selectbestencoding via wildcard Accept-Encoding header...

EUVD-2026-18423

Rack: Forwarded Header semicolon injection enables Host and Scheme spoofing...

GHSA-QFGR-CRR9-7R49 Rack: Forwarded Header semicolon injection enables Host and Scheme spoofing

Summary Rack::Utils.forwardedvalues parses the RFC 7239 Forwarded header by splitting on semicolons before handling quoted-string values. Because quoted values may legally contain semicolons, a header such as: http Forwarded: for="127.0.0.1;host=evil.com;proto=https" can be interpreted by Rack as...

Rack: Forwarded Header semicolon injection enables Host and Scheme spoofing

Summary Rack::Utils.forwardedvalues parses the RFC 7239 Forwarded header by splitting on semicolons before handling quoted-string values. Because quoted values may legally contain semicolons, a header such as: http Forwarded: for="127.0.0.1;host=evil.com;proto=https" can be interpreted by Rack as...

GHSA-RX22-G9MX-QRHV Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values

Summary Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result,...

Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values

Summary Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result,...

EUVD-2026-18417

Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values...

EUVD-2026-18368

Rack's greedy multipart boundary parsing can cause parser differentials and WAF bypass...

CVE-2026-34752

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with proto: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4...

GHSA-X8CG-FQ8G-MXFX Rack's multipart byte range processing allows denial of service via excessive overlapping ranges

Summary Rack::Utils.getbyteranges parses the HTTP Range header without limiting the number of individual byte ranges. Although the existing fix for CVE-2024-26141 rejects ranges whose total byte coverage exceeds the file size, it does not restrict the count of ranges. An attacker can supply many...

Rack's multipart byte range processing allows denial of service via excessive overlapping ranges

Summary Rack::Utils.getbyteranges parses the HTTP Range header without limiting the number of individual byte ranges. Although the existing fix for CVE-2024-26141 rejects ranges whose total byte coverage exceeds the file size, it does not restrict the count of ranges. An attacker can supply many...

GHSA-Q4QF-9J86-F5MH Rack:: Static header_rules bypass via URL-encoded paths

Summary Rack::Staticapplicablerules evaluates several headerrules types against the raw URL-encoded PATHINFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers...

EUVD-2026-18384

Rack:: Static headerrules bypass via URL-encoded paths...

Rack:: Static header_rules bypass via URL-encoded paths

Summary Rack::Staticapplicablerules evaluates several headerrules types against the raw URL-encoded PATHINFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers...

CVE-2026-34752 Haraka affected by DoS via `__proto__` email header

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with proto: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4...

CVE-2026-34752

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with proto: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4...

CVE-2026-34752 Haraka affected by DoS via `__proto__` email header

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with proto: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4...

CVE-2026-34752 Haraka affected by DoS via `__proto__` email header

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with proto: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4...

CVE-2026-34752

Haraka (Node.js mail server) is affected by a DoS/crash vulnerability when processing an email header named proto that crashes the worker process. The issue is triggered by the header parsing path in haraka-email-message, appears before 3.1.4, and has been patched in Haraka 3.1.4 or newer. Public...