Input Validation Issue in Ash Project Affects Multiple Versions

CVE-2026-82741

What is CVE-2026-82741?

This vulnerability in the Ash Project allows an attacker to exploit improper validation of input types within Ash.Type.Union data structures. By manipulating the tag names in stored values, an attacker can bypass critical validation and access or mutate data improperly. This can lead to unauthorized access and execution of malicious code under the guise of valid operations. The flaw stems from the union's inability to enforce the correct configured tag during data serialization—thus, delivering a significant security risk that was addressed in version updates.

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