AIKIDO-2026-503347
spomky-labs/pki-framework is vulnerable to Regular Expression Denial of Service (ReDoS)
53
Medium Risk
This Affects:
spomky-labs/pki-frameworkTL;DR
PEM_REGEX in PEM.php uses unanchored lazy groups, so repeated -----BEGIN lines with no matching -----END marker cause cubic backtracking. PEM::fromString() and PEMBundle::fromString() run this regex on user supplied certificate or bundle text. A few kilobytes of this text use far more CPU than parsing thousands of real certificates. The fix anchors the pattern and allows only base64 content on single line labels.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you parse PEM certificate or bundle text from an untrusted source.
Background info
spomky-labs/pki-framework is vulnerable to Regular Expression Denial of Service (ReDoS) in versions 0.0.1 - 1.6.1.
How to fix this
Upgrade the spomky-labs/pki-framework library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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