GitHub Advisoryadvisory · crates.io

GHSA-965h-392x-2mh5 webpki: Name constraints for URI names were incorrectly accepted

LOW Published 2026-04-16 Modified 2026-04-16 Official page ↗
Ecosystem
crates.io
Packages
rustls-webpki
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-295
Reviewed
2026-04-16

Affected packages

• crates.io rustls-webpki: >= 0.101.0, < 0.103.12 → fixed in 0.103.12 • crates.io rustls-webpki: >= 0.104.0-alpha.1, < 0.104.0-alpha.6 → fixed in 0.104.0-alpha.6

Description

Name constraints for URI names were ignored and therefore accepted. Note this library does not provide an API for asserting URI names, and URI name constraints are otherwise not implemented. URI name constraints are now rejected unconditionally. Since name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.

Related

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References