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RUSTSEC-2026-0174
No affected components available
Authorization::value uses HeaderValue::value with the claim
that the internal string is ASCII, but Authorization::new and
Authorization::set_credentials accept arbitrary String credentials without
validation. As a result, safe code can construct a header value containing
non-ASCII UTF-8 while the implementation assumes ASCII.
WwwAuthenticate::new and WwwAuthenticate::set_realm similarly accepts arbitrary String input, so WwwAuthenticate::value can also produce a header value that violates the crate’s documented ASCII invariants.
This issue has not been confirmed as Undefined Behavior, but the unsafe
justification in Authorization::value and WwwAuthenticate::value appears incorrect and can produce values outside the expected ASCII-only constraints.
The http-types crate is unmaintained and the issue is unlikely to be fixed.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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