Integer Overflow Vulnerability in libexpat by Expat

CVE-2026-56403

What is CVE-2026-56403?

The libexpat library, utilized for XML parsing, is susceptible to an integer overflow vulnerability prior to version 2.8.2. This vulnerability occurs during the processing of attributes, which can lead to potential exploitation by attackers. Proper validation of input sizes is crucial for preventing unexpected behaviors and security breaches. It is recommended that users upgrade to the latest version to mitigate risks.

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