What is RHSA-2026:26538?

RHSA-2026:26538 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.21.2

Which CVE IDs does RHSA-2026:26538 cover?

RHSA-2026:26538 covers the following CVE IDs: CVE-2026-27141, CVE-2026-40938. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:26538?

RHSA-2026:26538 has a CVSS v3 base score of 8.5, published by Red Hat Product Security.

RHSA-2026:26538HighCVSS 8.5

Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.21.2

Vendor

Red Hat Product Security

Published

June 17, 2026

Last Modified

June 28, 2026

🔗 CVE IDs covered (2)

CVE-2026-27141 →CVE-2026-40938 →

📋 Description

CVE-2026-27141 — golang.org/x/net/http2: golang.org/x/net/http2: Denial of Service due to malformed HTTP/2 frames CVE-2026-40938 — github.com/tektoncd/pipeline: Tekton Pipelines: Arbitrary code execution and secret exfiltration via malicious git commands

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:26538
externalhttps://access.redhat.com/security/cve/CVE-2026-27141
externalhttps://access.redhat.com/security/cve/CVE-2026-40938
externalhttps://access.redhat.com/security/updates/classification/
externalhttps://docs.redhat.com/en/documentation/red_hat_openshift_pipelines
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_26538.json