Headline
GHSA-7r2v-8wxr-3ch5: Yii does not prevent XSS in scenarios where fallback error renderer is used
Impact
Affected versions of yiisoft/yii are vulnerable to Reflected XSS in specific scenarios where the fallback error renderer is used.
Patches
Upgrade yiisoft/yii to version 1.1.31 or higher.
References
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Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.