Linux · 
Red Hat · Security advisory · August 13, 2026
Red Hat · Security advisory · August 13, 2026RHSA-2026:66350: Security update for 3 packages
RHSA-2026:66350, released August 13, 2026, fixes 8 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
8
1 rated Critical
Exploited
0
None reported
Highest CVSS
10.0
Base score, 0 to 10
Highest EPSS
0.0183
79th percentile
Priority of the 8 CVEs
Patch now 0
Urgent 1
High 7
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| openshift | RHEL 10 | 4.21.0-202609022229.p2.g93afd70.assembly.stream.el10 |
| openshift-clients | RHEL 10 | 4.21.0-202609071555.p2.gd0bf7cc.assembly.stream.el10 |
| ose-crio-credential-provider | RHEL 10 | 4.21.0-202609021357.p2.g83d4961.assembly.stream.el10 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-39821 | Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna | 10.0 | 0.0183 | None reported |
| High | CVE-2026-33814 | Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net | 7.5 | 0.0084 | None reported |
| High | CVE-2026-33818 | Enforce maximum recursion depth in encoding/asn1 | 8.8 | 0.0057 | None reported |
| High | CVE-2026-56859 | Add recursion depth guard during decode in encoding/xml | 8.8 | 0.0057 | None reported |
| High | CVE-2026-56862 | Limit handshake messages we are willing to accept post-handshake in crypto/tls | 8.8 | 0.0057 | None reported |
| High | CVE-2026-42504 | Quadratic complexity in WordDecoder.DecodeHeader in mime | 8.8 | 0.0056 | None reported |
| High | CVE-2026-56860 | Avoid quadratic complexity in resolvePath in net/url | 8.8 | 0.0055 | None reported |
| High | CVE-2026-39822 | Root escape via symlink plus trailing slash in os | 8.2 | 0.0023 | None reported |
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