CVE-2026-7381

CVE-2026-7381 · Plack::Middleware::XSendfile versions through 1.0053 for Perl can allow client-controlled path rewriting

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Plack::Middleware::XSendfile versions through 1.0053 for Perl can allow client-controlled path rewriting. Plack::Middleware::XSendfile allows the variation setting (sendfile type) to be set by the client via the X-Sendfile-Type header, if it is not considered in the middleware constructor or the Plack environment. A malicious client can set the X-Sendfile-Type header to "X-Accel-Redirect" to services running behind nginx reverse proxies, and then set the X-Accel-Mapping to map the path to an arbitrary file on the server. Since 1.0053, Plack::Middleware::XSendfile is deprecated and will be removed from future releases of Plack. This is similar to CVE-2025-61780 for Rack::Sendfile, although Plack::Middleware::XSendfile has some mitigations that disallow regular expressions to be used in the mapping, and only apply the mapping for the "X-Accel-Redirect" type.

CVSS 9.1 · Critical · EPSS 0.5%

Published

2026-04-29T22:13:35.351Z

Updated

2026-04-30T13:18:45.937Z

Stack: system

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