AZL-103509

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-103509.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-103509
Upstream
Published
2026-09-18T14:19:11Z
Modified
2026-09-26T05:34:12Z
Summary
CVE-2026-93601 affecting package rust 1.96.1-2
Details

rustls-webpki (the Rust webpki fork used by rustls) versions >= 0.101.0 and prior to 0.103.12 and 0.104.0-alpha.6 incorrectly accepted permitted-subtree DNS name constraints for certificates asserting a wildcard name. For example, a name constraint of accept.example.com was treated as satisfied by a certificate for *.example.com, which could feasibly assert reject.example.com — a name outside the permitted subtree. Because name constraints are restrictions applied to otherwise properly issued certificates, the issue is only reachable after signature verification succeeds and requires a misissued wildcard certificate to exploit.

References

Affected packages

Azure Linux:3 / rust

Package

Name
rust
Purl
pkg:rpm/azure-linux/rust

Affected ranges

Type
ECOSYSTEM
Events
Introduced
1.85.0
Last Affected
1.96.1-2

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-103509.json"