CVE-2026-93600 (GCVE-0-2026-93600)
Vulnerability from cvelistv5
Published
2026-09-18 13:20
Modified
2026-09-21 20:51
Severity ?
2.1 (Low) - CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
2.2 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Summary
rustls-webpki (rustls/webpki) versions 0.101.0 through 0.103.11 and 0.104.0-alpha releases before 0.104.0-alpha.6 ignore X.509 name constraints that apply to URI names, causing such constraints to be accepted rather than enforced. Because name constraints are restrictions on otherwise properly issued certificates, the flaw is only reachable after successful signature verification and requires a misissued certificate to exploit; the library also provides no API for asserting URI names, and URI name constraints are otherwise unimplemented. Versions 0.103.12 and 0.104.0-alpha.6 reject URI name constraints unconditionally.
References
Impacted products
Vendor Product Version
rustls webpki Version: 0.101.0   ≤
Version: 0.104.0-alpha.1   ≤
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