Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.21.1
The 1.21.1 release of Red Hat OpenShift Pipelines Operator.
AI Analysis
Technical Summary
The vulnerability CVE-2025-66506 affects Fulcio, a certificate authority component used in Red Hat OpenShift Pipelines. It allows denial of service through asymmetric resource consumption by processing a crafted OpenID Connect token with many period characters, causing excessive memory allocation. This flaw is tracked under CWE-405 (Asymmetric Resource Consumption) and can lead to service unavailability due to resource exhaustion. Red Hat has released OpenShift Pipelines Operator version 1.21.1 to fix this issue.
Potential Impact
An attacker can cause a denial of service condition by sending a malicious OIDC token that triggers excessive memory allocation in Fulcio, leading to resource exhaustion and potential service downtime in affected Red Hat OpenShift Pipelines deployments. There is no impact on confidentiality or integrity, but availability is highly impacted.
Mitigation Recommendations
Red Hat has released OpenShift Pipelines Operator version 1.21.1 which includes a fix for this vulnerability. Users should upgrade to version 1.21.1 or later to remediate the issue. No additional mitigations are specified or required beyond applying the official update.
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.21.1
Description
The 1.21.1 release of Red Hat OpenShift Pipelines Operator.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-66506 affects Fulcio, a certificate authority component used in Red Hat OpenShift Pipelines. It allows denial of service through asymmetric resource consumption by processing a crafted OpenID Connect token with many period characters, causing excessive memory allocation. This flaw is tracked under CWE-405 (Asymmetric Resource Consumption) and can lead to service unavailability due to resource exhaustion. Red Hat has released OpenShift Pipelines Operator version 1.21.1 to fix this issue.
Potential Impact
An attacker can cause a denial of service condition by sending a malicious OIDC token that triggers excessive memory allocation in Fulcio, leading to resource exhaustion and potential service downtime in affected Red Hat OpenShift Pipelines deployments. There is no impact on confidentiality or integrity, but availability is highly impacted.
Mitigation Recommendations
Red Hat has released OpenShift Pipelines Operator version 1.21.1 which includes a fix for this vulnerability. Users should upgrade to version 1.21.1 or later to remediate the issue. No additional mitigations are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6166
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-33022","CVE-2026-33211"]
Threat ID: 6a16096ee29bf47b506362b0
Added to database: 05/26/2026, 20:58:22 UTC
Last enriched: 08/15/2026, 00:01:16 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 116
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