Skip to main content
CVE-2026-33186VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Dell · Red Hat OpenShift Container Platform (gRPC-Go): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Affects Bundesamt für Sicherheit in der Informationstechnik DellSource GCVE Database

0
Compare
Authoritative record:CVE-2026-33186· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical : upgrade to 1.79.3 as a priority.

Data as of 13 Nov 2026, 11:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.79.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Mar 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 13 Nov 2026.

What to do

Upgrade grpc-go and github.com/grpc/grpc-go to 1.79.3.

Affected software

ProductAffectedFixed in
grpcgrpc-goAffected
  • <1.79.3
Fixed in
  • 1.79.3
Gogithub.com/grpc/grpc-gopkg:golang/github.com/grpc/grpc-goOther threatsAffected
  • <1.79.3
Fixed in
  • 1.79.3

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

AI-suggested

A fix for this vulnerability is available in Red Hat OpenShift Container Platform version 5.36.00.16 and OpenShift Container Platform 4.21.10. Users should upgrade to these versions following the official Red Hat upgrade documentation to fully apply the security update. No additional mitigation steps are indicated beyond applying the official patch.

Description

CVE-2026-33186 is a security vulnerability in Red Hat OpenShift Container Platform related to gRPC-Go, which allows bypassing of authorization due to improper HTTP/2 path validation. This issue affects versions prior to 5.36.00.16, with the fix included in version 5.36.00.16. Red Hat has released updates in OpenShift Container Platform 4.21.10 to address this and other issues. Users are advised to upgrade to the fixed versions to mitigate the vulnerability.

References

Community reviews

Loading reviews…