CVE-2025-66382 – Apache libexpat XML Entity Expansion Denial of Service

The following table lists the changes that have been made to the
CVE-2025-66382 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Nov. 28, 2025

    Action Type Old Value New Value
    Added Description In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
    Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
    Added CWE CWE-407
    Added Reference https://github.com/libexpat/libexpat/issues/1076
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