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CVE-2026-110687

Description

A flaw was found in perl-Cpanel-JSON-XS. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encoder writes out as Latin-1 characters. A byte-string key whose bytes are valid UTF-8 is sorted out of order, and two keys that encode differently can compare equal and are left in hash order. This prevents the generation of strictly canonical JSON, potentially breaking applications that rely on consistent, predictable serialization for cryptographic hashing or digital signature validation.

Statement

Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.

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