Linux · 
Red Hat · Security advisory · October 21, 2026
Red Hat · Security advisory · October 21, 2026RHSA-2026:86196: Security update for 8 packages
RHSA-2026:86196, released October 21, 2026, fixes 15 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
15
None rated Critical
Exploited
0
None reported
Highest CVSS
9.1
Base score, 0 to 10
Highest EPSS
0.0087
58th percentile
Priority of the 15 CVEs
Patch now 0
Urgent 0
High 13
Routine 2
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| go-toolset | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-bin | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-docs | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-misc | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-race | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-src | RHEL 9 | 0:1.26.10-1.el9_8 |
| golang-tests | RHEL 9 | 0:1.26.10-1.el9_8 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-78659 | HTTP/2 server memory exhaustion due to Trailer headers in net/http | 7.5 | 0.0087 | None reported |
| High | CVE-2026-78663 | Double flow control refund on HTTP/2 server streams in net/http | 9.1 | 0.0086 | None reported |
| High | CVE-2026-78669 | Excessive CPU consumption from repeated initial window changes in net/http | 7.5 | 0.0085 | None reported |
| High | CVE-2026-97031 | Reject malformed ECH outer extension references in crypto/tls | 7.5 | 0.0072 | None reported |
| High | CVE-2026-94440 | Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart | 7.5 | 0.0071 | None reported |
| High | CVE-2026-97032 | HTTP/2 server crash due to HPACK encoder race in net/http | 7.5 | 0.0068 | None reported |
| High | CVE-2026-78667 | Lack of limit on size of parsed Range headers in net/http | 7.5 | 0.0066 | None reported |
| High | CVE-2026-56866 | HTTP/1 client connection desynchronization after CONNECT rejection in net/http | 7.5 | 0.0060 | None reported |
| High | CVE-2026-78660 | HTTP/2 transport accepts malformed framing-related headers in net/http | 7.5 | 0.0054 | None reported |
| High | CVE-2026-94439 | HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http | 7.5 | 0.0053 | None reported |
| High | CVE-2026-111943 | Go: CVE-2026-111943 Distrust compromised intermediate certificates in crypto/x509 | 8.1 | 0.0040 | None reported |
| High | CVE-2026-94447 | Checksum database bypass for golang.org/toolchain in cmd/go | 7.8 | 0.0010 | None reported |
| High | CVE-2026-94444 | Checksum bypass for golang.org/fips140 in cmd/go | 7.8 | 0.0010 | None reported |
| Routine | CVE-2026-94448 | Reset context tracking on consecutive template expressions in html/template | 6.1 | 0.0029 | None reported |
| Routine | CVE-2026-97030 | Recognize yield as regexp preceder keyword in html/template | 6.1 | 0.0029 | None reported |
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