Skip to main content
CVE-2026-84445VulnerabilityPublished

Red Hat Security Advisory: OpenShift Container Platform 5.0 NUMA resources operator extras update

Affects Red HatSource GCVE Database

0
Compare
Authoritative record:CVE-2026-84445· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade Red Hat grpc-go to 1.83.2 or 1.82.2 soon.

Data as of 4 Nov 2026, 06:34 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.83.2, 1.82.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 3 Nov 2026.

What to do

Upgrade grpc-go and github.com/grpc/grpc-go to 1.83.2 or 1.82.2.

Affected software

ProductAffectedFixed in
grpcgrpc-goAffected
  • >=1.83.0 <1.83.2
Fixed in
  • 1.83.2
grpcgrpc-goAffected
  • <1.82.2
Fixed in
  • 1.82.2
Gogithub.com/grpc/grpc-gopkg:golang/github.com/grpc/grpc-goOther threatsAffected
  • <1.82.2
  • >=1.83.0 <1.83.2
Fixed in
  • 1.82.2
  • 1.83.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated packages and low-latency images for OpenShift Container Platform 5.0 that fix this vulnerability. Users are advised to upgrade their clusters following Red Hat's documented procedures for asynchronous errata updates. No additional mitigations are specified or required once the update is applied. The vendor manages remediation through these official updates.

Description

CVE-2026-84445 is a denial of service vulnerability in gRPC-Go servers created with xds.NewGRPCServer(). A remote client can send a malformed RPC request missing required :authority or Host headers, triggering an index-out-of-bounds panic that crashes the server process. This affects deployments using xDS-managed gRPC servers and can be unauthenticated in some cases. Standard gRPC servers without xDS routing are not vulnerable. Environments enforcing mutual TLS require authentication before the vulnerable stage, limiting exploitation to authenticated peers. Red Hat OpenShift Container Platform 5.0 users are advised to upgrade to updated packages containing fixes for this issue.

References

Community reviews

Loading reviews…