← CVE Intelligence

CVE-2026-78669

Excessive CPU consumption from repeated initial window changes in net/http PUBLISHED

Description (CNA)

A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.

Affected (CNA)

Vendor / productVersions
Go standard library / net/httpaffected 0 before 1.26.9
Go standard library / net/http/internal/http2affected 1.27.0-0 before 1.27.2
golang.org/x/net / golang.org/x/net/http2affected 0 before 0.60.0

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.