Linux · Security advisory · August 1, 2026
RLSA-2026:48790: osbuild-composer security update
RLSA-2026:48790, released August 1, 2026, fixes 5 CVEs in osbuild-composer (version 0:101.5-1.el8_10.rocky.0.6). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
5
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0162
76th percentile
Priority of the 5 CVEs
Patch now 0
Urgent 0
High 5
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| osbuild-composer | rocky 8 | 0:101.5-1.el8_10.rocky.0.6 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2026-33186 | gRPC-Go has an authorization bypass via missing leading slash in :path | 9.1 | 0.0162 | None reported | |
| High | CVE-2026-34986 | osbuild-composer: A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood | 9.1 | 0.0066 | None reported | |
| High | CVE-2026-32283 | Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls | 9.1 | 0.0063 | None reported | |
| High | CVE-2026-32280 | Unexpected work during chain building in crypto/x509 | 9.1 | 0.0063 | None reported | |
| High | CVE-2026-32282 | TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix | 9.1 | 0.0030 | None reported |
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