AIKIDO-2026-223383
spomky-labs/pki-framework is vulnerable to Improper Certificate Validation
74
High Risk
This Affects:
spomky-labs/pki-frameworkTL;DR
Name constraint matching compares DNS names, email addresses and URIs without canonicalisation, so names that clients treat as equal are not byte-equal to the constrained form. A trailing dot such as bank.example.com. evades a DNS or email excludedSubtrees entry, and PHP parse_url() parses URIs differently from WHATWG for backslashes and percent-encoding. A subordinate CA constrained to a namespace can issue certificates for names outside it. The fix canonicalises names before matching.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you rely on DNS, email, or URI name constraints when validating certification paths.
Background info
spomky-labs/pki-framework is vulnerable to Improper Certificate Validation in versions 1.0.0 - 1.6.1.
How to fix this
Upgrade the spomky-labs/pki-framework library to the patch version.
Are You Affected?
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