{"answers":{"affected":"11 open source packages ship an affected version, including github.com/tektoncd/pipeline. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40924 exists.","fix":"Upgrade github.com/tektoncd/pipeline to a fixed version for your release line: 1.0.2, 1.3.4, 1.6.2 or 1.9.3.","what":"CVE-2026-40924 is a medium-severity denial of service vulnerability in tektoncd pipeline, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-40924 and fix it if it is affected.\n\nWhat it is: CVE-2026-40924 is a medium-severity denial of service vulnerability in tektoncd pipeline, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40924 exists.\n\nAffected packages and fixed versions:\n- github.com/tektoncd/pipeline (Go): affected from 1.0.0; fixed in 1.0.2, 1.3.4, 1.6.2, 1.9.3, 1.11.1\n- github.com/tektoncd/pipeline (Go): affected from 1.0.0; fixed in 1.0.2\n- github.com/tektoncd/pipeline (Go): affected from 1.0.0; fixed in 1.0.2\n- github.com/tektoncd/pipeline (Go): affected from 1.10.0; fixed in 1.11.1\n- github.com/tektoncd/pipeline (Go): affected from 1.10.0; fixed in 1.11.1\n- github.com/tektoncd/pipeline (Go): affected from 1.2.0; fixed in 1.3.4\n- github.com/tektoncd/pipeline (Go): affected from 1.2.0; fixed in 1.3.4\n- github.com/tektoncd/pipeline (Go): affected from 1.4.0; fixed in 1.6.2\n- github.com/tektoncd/pipeline (Go): affected from 1.4.0; fixed in 1.6.2\n- github.com/tektoncd/pipeline (Go): affected from 1.7.0; fixed in 1.9.3\n- github.com/tektoncd/pipeline (Go): affected from 1.7.0; fixed in 1.9.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-40924/ (Markdown: https://insights.sbomify.com/CVE-2026-40924/index.md)","id":"CVE-2026-40924","markdown":"https://insights.sbomify.com/CVE-2026-40924/index.md","name":"CVE-2026-40924","record":{"aliases":["CLEANSTART-2026-XM62440","GHSA-m2cx-gpqf-qf74","GO-2026-5486"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Tekton Pipelines","requires_auth":"low_privilege","summary":"Attackers can crash Tekton resolver pods by triggering unbounded memory reads via HTTP responses, denying pipeline resolution services to the entire cluster.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"tekton_pipelines","vendor":"linuxfoundation"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"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 very large response body within the 1-minute timeout window, causing the tekton-pipelines-resolvers pod to be OOM-killed by Kubernetes. Because all resolver types (Git, Hub, Bundle, Cluster, HTTP) run in the same pod, crashing this pod denies resolution service to the entire cluster. Repeated exploitation causes a sustained crash loop. The same vulnerable code path is reached by both the deprecated pkg/resolution/resolver/http and the current pkg/remoteresolution/resolver/http implementations. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Tekton Pipelines: HTTP Resolver Unbounded Response Body Read Enables Denial of Service via Memory Exhaustion","id":"CVE-2026-40924","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":11,"n_references":2,"next":{"headline":"WWBN AVideo has CSRF in configurationUpdate.json.php Enables Full Site Configuration Takeover Including Encoder URL and SMTP Credentials","id":"CVE-2026-40925"},"packages":[{"ecosystem":"Go","fixed":["1.0.2","1.3.4","1.6.2","1.9.3","1.11.1"],"introduced":["1.0.0","1.1.0","1.4.0","1.7.0","1.10.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GO-2026-5486"},{"ecosystem":"Go","fixed":["1.0.2"],"introduced":["1.0.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":null,"source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.0.2"],"introduced":["1.0.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.11.1"],"introduced":["1.10.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":null,"source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.11.1"],"introduced":["1.10.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.3.4"],"introduced":["1.2.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":null,"source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.3.4"],"introduced":["1.2.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.6.2"],"introduced":["1.4.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":null,"source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.6.2"],"introduced":["1.4.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.9.3"],"introduced":["1.7.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":null,"source":"GHSA-m2cx-gpqf-qf74"},{"ecosystem":"Go","fixed":["1.9.3"],"introduced":["1.7.0"],"last_affected":[],"package":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","source":"GHSA-m2cx-gpqf-qf74"}],"prev":{"headline":"Tekton Pipelines: VolumeMount path restriction bypass via missing filepath.Clean in /tekton/ check","id":"CVE-2026-40923"},"products":["pipeline"],"published":"2026-04-21","related":[{"cvss_score":9.6,"headline":"Tekton Pipelines git resolver has path traversal that allows reading arbitrary files from the resolver pod","id":"CVE-2026-33211","kev_date_added":null,"published":"2026-03-23"},{"cvss_score":7.7,"headline":"Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL","id":"CVE-2026-40161","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":7.5,"headline":"Tekton Pipelines: Git Resolver Unsanitized Revision Parameter Enables git Argument Injection Leading to RCE","id":"CVE-2026-40938","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":6.5,"headline":"Tekton Pipelines: VerificationPolicy regex pattern bypass via substring matching","id":"CVE-2026-25542","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":6.5,"headline":"Tekton Pipelines: Controller can panic when setting long resolver names in TaskRun/PipelineRun","id":"CVE-2026-33022","kev_date_added":null,"published":"2026-03-20"},{"cvss_score":5.4,"headline":"Tekton Pipelines: VolumeMount path restriction bypass via missing filepath.Clean in /tekton/ check","id":"CVE-2026-40923","kev_date_added":null,"published":"2026-04-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-22","vendors":["tektoncd"]},"summary":"Attackers can crash Tekton resolver pods by triggering unbounded memory reads via HTTP responses, denying pipeline resolution services to the entire cluster.","url":"https://insights.sbomify.com/CVE-2026-40924/"}