CVE-2026-40924: Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines

Q: How do I fix CVE-2026-40924?

tekton pipelines: upgrade to 1.11.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-40924 being exploited?

CVE-2026-40924 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40924 affect?

CVE-2026-40924 affects tekton pipelines. Severity is medium (CVSS 6.5). Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, the HTTP resolver's FetchHttpResource function calls io.ReadA

Q: How urgent is CVE-2026-40924?

Priority 39/100. Public exploit reference; On your watchlist

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-40924 is a medium-severity flaw (CVSS 6.5) affecting tekton pipelines. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, the HTTP resolver's FetchHttpResource function calls io.ReadAll(resp.Body) with no response body size limit. Any tenant with permission to create TaskRuns or PipelineRuns that reference the HTTP resolver can point it at an attacker-controlled HTTP server that returns a v

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-04-21
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: linuxfoundation

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-21 21:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

linuxfoundation tekton pipelines UPGRADE

Affected: < 1.11.1

Fixed in: 1.11.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tekton-pipelines || rpm -q tekton-pipelines || tekton-pipelines --version

2. UPGRADE to 1.11.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tekton-pipelines

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tekton-pipelines

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40924?

tekton pipelines: upgrade to 1.11.1. Exact commands for each OS are on this page.

Is CVE-2026-40924 being exploited?

CVE-2026-40924 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40924 affect?

CVE-2026-40924 affects tekton pipelines. Severity is medium (CVSS 6.5). Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, the HTTP resolver's FetchHttpResource function calls io.ReadA

How urgent is CVE-2026-40924?

Priority 39/100. Public exploit reference; On your watchlist

Software pages

Kubernetes vulnerabilities

Related CVEs

CVE-2026-25542 MEDIUM 6.5 UPGRADE Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines
CVE-2026-40923 MEDIUM 5.4 UPGRADE Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines
CVE-2026-40938 HIGH 7.5 UPGRADE Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines
CVE-2026-40161 HIGH 7.7 UPGRADE Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines

References

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