CVE-2025-47905 – Varnish Cache HTTP/1 Chunk Boundary CRLF Injection

The following table lists the changes that have been made to the
CVE-2025-47905 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]

    May. 13, 2025

    Action Type Old Value New Value
    Added Description Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
    Added CWE CWE-444
    Added Reference https://varnish-cache.org/security/VSV00016.html
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