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Fencer Vulns
medium 6.5

CVE-2026-33022 json

Tekton Pipelines: Controller can panic when setting long resolver names in TaskRun/PipelineRun

published 2026-03-17 7 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-13615 , GHSA-cv4x-93xx-wgfj , GO-2026-4730

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Versions 0.60.0 through 1.0.0, 1.1.0 through 1.3.2, 1.4.0 through 1.6.0, 1.7.0 through 1.9.0, 1.10.0, and 1.10.1 have a denial-of-service vulnerability in that allows any user who can create a TaskRun or PipelineRun to crash the controller cluster-wide by setting .spec.taskRef.resolver (or .spec.pipelineRef.resolver) to a string of 31+ characters. The crash occurs because GenerateDeterministicNameFromSpec produces a name exceeding the 63-character DNS-1123 label limit, and its truncation logic panics on a [-1] slice bound since the generated name contains no spaces. Once crashed, the controller enters a CrashLoopBackOff on restart (as it re-reconciles the offending resource), blocking all CI/CD reconciliation until the resource is manually deleted. Built-in resolvers (git, cluster, bundles, hub) are unaffected due to their short names, but any custom resolver name triggers the bug. The fix truncates the resolver-name prefix instead of the full string, preserving the hash suffix for determinism and uniqueness. This issue has been patched in versions 1.0.1, 1.3.3, 1.6.1, 1.9.2 and 1.10.2.

Patch / fix

  • go github.com/tektoncd/pipeline 1.0.1, 1.3.3, 1.6.1, 1.9.2, 1.10.2
  • linuxfoundation tekton_pipelines 1.0.1, 1.3.3, 1.6.1, 1.9.2, 1.10.2
  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260326T203309-150000.1.155.2

suse advisories SUSE-SU-2026:1135-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-33022 updated cvss 6.5

github.com/tektoncd/pipeline: Tekton Pipelines: Denial of Service via long resolver names

  • Red Hat Builds for Red Hat OpenShift openshift-builds/openshift-builds-waiters-rhel9, openshift-builds/openshift-builds-webhook-rhel9, openshift-builds/openshift-builds-rhel9-operator, openshift-builds/openshift-builds-controller-rhel9, openshift-builds/openshift-builds-git-cloner-rhel9, openshift-builds/openshift-builds-image-bundler-rhel9, +1 more Red Hat OpenShift Pipelines openshift-pipelines/pipelines-nop-rhel8, openshift-pipelines/pipelines-nop-rhel9, openshift-pipelines/pipelines-opc-rhel9, openshift-pipelines/pipelines-events-rhel8, openshift-pipelines/pipelines-events-rhel9, openshift-pipelines/pipelines-cli-tkn-rhel8, +47 more Red Hat OpenShift Serverless openshift-serverless-1/kn-client-kn-rhel9, openshift-serverless-1/kn-plugin-func-func-util-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-ml-pipelines-driver-rhel8, rhoai/odh-ml-pipelines-launcher-rhel8, rhoai/odh-ml-pipelines-api-server-v2-rhel8, rhoai/odh-ml-pipelines-persistenceagent-v2-rhel8, rhoai/odh-ml-pipelines-scheduledworkflow-v2-rhel8 Red Hat OpenShift Virtualization 4 container-native-virtualization/kubevirt-ssp-operator-rhel9, container-native-virtualization/kubevirt-template-validator-rhel9, container-native-virtualization/kubevirt-tekton-tasks-create-datavolume-rhel9, container-native-virtualization/kubevirt-tekton-tasks-disk-virt-customize-rhel9 Red Hat Trusted Artifact Signer rhtas/ec-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift Pipelines 1.2 openshift-pipelines 1775707731, openshift-pipelines 1776925111
    fixed: vendor fix RHSA-2026:10026
  • Red Hat OpenShift Pipelines 1.21 openshift-pipelines 1774556221, openshift-pipelines 1774871390
    fixed: vendor fix RHSA-2026:6166
  • Red Hat OpenShift Pipelines 1.2 openshift-pipelines 1774596617, openshift-pipelines 1775103097, openshift-pipelines 1775109483, openshift-pipelines 1775109494, openshift-pipelines 1775109495, openshift-pipelines 1775109499, +19 more Red Hat OpenShift Pipelines 1.21 openshift-pipelines 1774252909, openshift-pipelines 1774260907, openshift-pipelines 1774260980, openshift-pipelines 1774260981, openshift-pipelines 1774260987, openshift-pipelines 1774262408, +27 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/tektoncd/pipeline
>=0.60.0, <1.0.1
>=1.1.0, <1.3.3
>=1.4.0, <1.6.1
>=1.7.0, <1.9.2
>=1.10.0, <1.10.2
1.0.1
1.3.3
1.6.1
1.9.2
1.10.2

Affected products

  • tektoncd pipeline

Classification

Weakness
  • CWE-129 Improper Validation of Array Index
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.