CVE-2026-78663 Affecting golang-misc package, versions <0:1.26.10-1.el10_2.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.57% (46th percentile)

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  • Snyk IDSNYK-ALMALINUX10-GOLANGMISC-21691028
  • published24 Oct 2026
  • disclosed20 Oct 2026

Introduced: 20 Oct 2026

NewCVE-2026-78663  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 golang-misc to version 0:1.26.10-1.el10_2.alma.1 or higher.
This issue was patched in ALSA-2026:86093.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-misc package and not the golang-misc package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data. A malicious client can exploit this to bypass the configured connection-level flow control limit (MaxReceiveBufferPerConnection). Total buffered data is still limited by the concurrent stream limit and stream-level flow control.

CVSS Base Scores

version 3.1