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TI-2021-02637 Aliases CVE-2021-3703GHSA-x358-pmcq-q2x3

It was found that the CVE-2021-27918, CVE-2021-31525 and CVE-2021-33196 have been…

Priority LOW 34Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

It was found that the CVE-2021-27918, CVE-2021-31525 and CVE-2021-33196 have been incorrectly mentioned as fixed in RHSA for Serverless 1.16.0 and Serverless client kn 1.16.0. These have been fixed with Serverless 1.17.0.

Why it matters now

EPSS 0.00838 58th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—ServerlessFixed in Serverless 1.17.0—No fix listedCNA
  • Serverless Vendor— Affected Fixed in Serverless 1.17.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:openshift_serverless:*:*:*:*:*:*:*:*before 1.17.0VulnerableRed Hat
  • cpe:2.3:a:redhat:openshift_serverless:*:*:*:*:*:*:*:* Versions before 1.17.0 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2021:3556 Released 2021-09-16 · Red Hat rating Moderate
    Release of OpenShift Serverless 1.17.0
    • Red Hat OpenShift Serverless 1.17 openshift-serverless-1/client-kn-rhel8, openshift-serverless-1/eventing-apiserver-receive-adapter-rhel8, openshift-serverless-1/eventing-controller-rhel8 +27
  • RHSA-2021:3555 Released 2021-09-16 · Red Hat rating Moderate
    Release of OpenShift Serverless Client kn 1.17.0
    • Red Hat OpenShift Serverless 1.0 openshift-serverless-clients-0.23.2-1.el8

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Serverless 1.0Fixed RHSA-2021:3555
Red Hat OpenShift Serverless 1.17Fixed RHSA-2021:3556
Not affected: 1 product
  • OpenShift Serverless

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3703
  2. 2026-10-03 Alias added: GHSA-x358-pmcq-q2x3

References

Advisory 2

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
  • TI-2023-04469 Quarkus: http security policy bypass CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences