CVE-2026-97032
HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies
CVSS
7.5
High
EPSS
0.5%
p42
KEV
—
Exploit Today
13
0-100
Published: Oct 8, 2026 · Last modified: Oct 15, 2026 · CWE-362
0.2%EPSS · 30 days0.5%
2026-10-092026-11-05
HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the other modifies the encoder's table size when handling a SETTINGS frame containing SETTINGS_HEADER_TABLE_SIZE that a client sends. A malicious client can repeatedly send a request while changing the header table size to crash the server.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-926945.9 MED—
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