SUSE grpc · Security update for warewulf4
Affects SUSE grpcSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.3 Medium : upgrade SUSE grpc to 1.56.0 when convenient.
Data as of 13 Nov 2026, 22:06 UTC
- Patch
- Available – fixed in 1.56.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 1 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade google.golang.org/grpc to 1.56.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Gogoogle.golang.org/grpcpkg:golang/google.golang.org/grpcOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Apply the security update for warewulf4 that upgrades the google.golang.org/grpc library to a fixed version addressing CVE-2026-84445 and CVE-2026-84303. This update resolves the denial of service and authorization bypass vulnerabilities. No additional mitigation steps are indicated beyond applying this update.
Description
This security update for warewulf4 addresses two critical vulnerabilities in the google.golang.org/grpc library. The first vulnerability (CVE-2026-84445) allows denial of service (DoS) via a crash caused by missing ':authority' and 'Host' headers in gRPC-Go xDS servers. The second vulnerability (CVE-2026-84303) involves an xDS RBAC HTTP filter implementation issue that permits bypassing authorization policies through mixed-case or canonical-case header matches.
References
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/2026/opensuse-su-2026_22315-1.json (opens in a new tab)
- bugzilla.suse.com/1278760 (opens in a new tab)
- bugzilla.suse.com/1279257 (opens in a new tab)
- suse.com/security/cve/CVE-2026-84303/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-84445/ (opens in a new tab)