# CVE-2026-97032: HTTP/2 server crash due to HPACK encoder race in net/http

CVE-2026-97032 is fixed in 21 products on 1 platform, first by DEBIAN-CVE-2026-97032, released October 12, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-97032
- Priority: High
- CVSS: 7.5 (Moderate)
- EPSS: 0.0068
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 8, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97032

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cadvisor opensuse-leap 16.0 | 0.60.6-bp160.3.1 | [OPENSUSE-SU-2026:22200-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22200-1.md) | Nov 7, 2026 |
| Linux | coredns opensuse-leap 16.0 | 1.15.0-bp160.1.1 | [OPENSUSE-SU-2026:22194-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22194-1.md) | Nov 7, 2026 |
| Linux | delve RHEL 8 | 0:1.26.1-1.module+el8.10.0+24516+40554724 | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | delve almalinux 8 | 1.26.1-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | go-toolset RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | go-toolset RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | go-toolset almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | go-toolset almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | go-toolset almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | go1.26 opensuse-leap 16.0 | 1.26.9-160000.1.1 | [OPENSUSE-SU-2026:22095-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22095-1.md) | Nov 7, 2026 |
| Linux | go1.26 sles 15.6 | 1.26.9-150000.1.33.1 | [SUSE-SU-2026:4629-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4629-1.md) | Nov 7, 2026 |
| Linux | go1.26 sles 15.7 | 1.26.9-150000.1.33.1 | [SUSE-SU-2026:4629-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4629-1.md) | Nov 7, 2026 |
| Linux | go1.26 sles 16.0 | 1.26.9-160000.1.1 | [SUSE-SU-2026:24239-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24239-1.md) | Nov 7, 2026 |
| Linux | go1.26-openssl sles 15.6 | 1.26.10-150600.13.18.1 | [SUSE-SU-2026:4866-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4866-1.md) | Nov 7, 2026 |
| Linux | go1.26-openssl sles 15.7 | 1.26.10-150600.13.18.1 | [SUSE-SU-2026:4866-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4866-1.md) | Nov 7, 2026 |
| Linux | go1.27 opensuse-leap 16.0 | 1.27.2-160000.1.1 | [OPENSUSE-SU-2026:22093-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22093-1.md) | Nov 7, 2026 |
| Linux | go1.27 sles 15.6 | 1.27.2-150000.1.12.1 | [SUSE-SU-2026:4625-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4625-1.md) | Nov 7, 2026 |
| Linux | go1.27 sles 15.7 | 1.27.2-150000.1.12.1 | [SUSE-SU-2026:4625-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4625-1.md) | Nov 7, 2026 |
| Linux | go1.27 sles 16.0 | 1.27.2-160000.1.1 | [SUSE-SU-2026:24237-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24237-1.md) | Nov 7, 2026 |
| Linux | golang RHEL 10 | 1.26.10-1.el10_0 | [RHSA-2026:87040](https://patchblox.com/security/data/fix/linux/rhsa-2026-87040.md) | Oct 21, 2026 |
| Linux | golang RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-1.26 Debian 14 | 1.26.9-1 | [DEBIAN-CVE-2026-97032](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97032.md) | Oct 12, 2026 |
| Linux | golang-1.27 Debian 14 | 1.27.2-1 | [DEBIAN-CVE-2026-97032](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97032.md) | Oct 12, 2026 |
| Linux | golang-bin RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-bin RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-bin almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-bin almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-bin almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-bin amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-docs RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-docs RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-docs almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-docs almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-docs almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-docs amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-golang-x-net Debian 14 | 1:0.60.0-1 | [DEBIAN-CVE-2026-97032](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97032.md) | Oct 12, 2026 |
| Linux | golang-misc RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-misc RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-misc almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-misc almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-misc almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-misc amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-race RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-race RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-race almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-race almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-race almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-shared amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-src RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-src RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-src almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-src almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-src almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-src amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | golang-tests RHEL 8 | 0:1.26.10-1.module+el8.10.0+25107+6b50279c | [RHSA-2026:86203](https://patchblox.com/security/data/fix/linux/rhsa-2026-86203.md) | Oct 21, 2026 |
| Linux | golang-tests RHEL 9 | 0:1.26.10-1.el9_8 | [RHSA-2026:86196](https://patchblox.com/security/data/fix/linux/rhsa-2026-86196.md) | Oct 21, 2026 |
| Linux | golang-tests almalinux 10 | 1.26.10-1.el10_2.alma.1 | [ALSA-2026:86093](https://patchblox.com/security/data/fix/linux/alsa-2026-86093.md) | Nov 7, 2026 |
| Linux | golang-tests almalinux 8 | 1.26.10-1.module_el8.10.0+4307+6e4cbc60 | [ALSA-2026:86203](https://patchblox.com/security/data/fix/linux/alsa-2026-86203.md) | Nov 7, 2026 |
| Linux | golang-tests almalinux 9 | 1.26.10-1.el9_8 | [ALSA-2026:86196](https://patchblox.com/security/data/fix/linux/alsa-2026-86196.md) | Nov 7, 2026 |
| Linux | golang-tests amzn 2023 | 1.26.9-1.amzn2023.0.1 | [ALAS2023-2026-3225](https://patchblox.com/security/data/fix/linux/alas2023-2026-3225.md) | Nov 7, 2026 |
| Linux | gosec opensuse-leap 16.0 | 2.30.0-bp160.1.1 | [OPENSUSE-SU-2026:22197-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22197-1.md) | Nov 7, 2026 |
| Linux | kubevirt1.9 opensuse-leap 16.0 | 1.9.1-160000.1.1 | [OPENSUSE-SU-2026:22180-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22180-1.md) | Nov 7, 2026 |
| Linux | trivy opensuse-leap 16.0 | 0.76.1-160000.1.1 | [OPENSUSE-SU-2026:22178-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22178-1.md) | Nov 7, 2026 |

---

Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.