CVE-2025-8671 – Apache HTTP/2 Denial-of-Service Vulnerability

The following table lists the changes that have been made to the
CVE-2025-8671 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]

    Aug. 13, 2025

    Action Type Old Value New Value
    Added Description A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.
    Added Reference https://github.com/galbarnahum/MadeYouReset
    Added Reference https://github.com/h2o/h2o/security/advisories/GHSA-mrjm-qq9m-9mjq
    Added Reference https://github.com/jetty/jetty.project/pull/13449
    Added Reference https://support2.windriver.com/index.php?page=security-notices
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