AIKIDO-2026-869435
pact_broker is vulnerable to Cross-Site Scripting (XSS)
54
Medium Risk
This Affects:
pact_brokerTL;DR
Published pact content such as consumer/provider names and interaction descriptions is converted to HTML in the Broker UI after only * and _ are escaped. Structural Markdown characters like [, ], (, ), and backticks stay unescaped, so crafted pact fields inject Markdown links and images, leading to stored cross-site scripting. The fix escapes the full set of CommonMark special characters via Pact::Doc::MARKDOWN_SPECIAL_CHARS_REGEXP.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you view the generated pact documentation for contracts published by untrusted users.
Background info
pact_broker is vulnerable to Cross-Site Scripting (XSS) in versions 1.0.0 - 2.120.0.
How to fix this
Upgrade the pact_broker library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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