{"answers":{"affected":"9 open source packages ship an affected version, including github.com/argoproj/argo-workflows/v3, argo-workflows and github.com/argoproj/argo-workflows. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42294 exists.","fix":"Upgrade github.com/argoproj/argo-workflows/v3 to 3.7.14 or later.","what":"CVE-2026-42294 is a high-severity denial of service vulnerability in argoproj argo-workflows, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42294 and fix it if it is affected.\n\nWhat it is: CVE-2026-42294 is a high-severity denial of service vulnerability in argoproj argo-workflows, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42294 exists.\n\nAffected packages and fixed versions:\n- github.com/argoproj/argo-workflows/v3 (Go): affected all versions; fixed in 3.7.14\n- github.com/argoproj/argo-workflows/v3 (Go): affected all versions; fixed in 3.7.14\n- github.com/argoproj/argo-workflows/v3 (Go): affected all versions; fixed in 3.7.14\n- argo-workflows (Bitnami): affected all versions; fixed in 3.7.14, 4.0.5\n- github.com/argoproj/argo-workflows (Go): affected all versions; no fix listed\n- github.com/argoproj/argo-workflows/v2 (Go): affected all versions; no fix listed\n- github.com/argoproj/argo-workflows/v4 (Go): affected from 4.0.0; fixed in 4.0.5\n- github.com/argoproj/argo-workflows/v4 (Go): affected from 4.0.0; fixed in 4.0.5\n- github.com/argoproj/argo-workflows/v4 (Go): affected from 4.0.0; fixed in 4.0.5\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-2026-42294/ (Markdown: https://insights.sbomify.com/CVE-2026-42294/index.md)","id":"CVE-2026-42294","markdown":"https://insights.sbomify.com/CVE-2026-42294/index.md","name":"CVE-2026-42294","record":{"aliases":["BIT-argo-workflows-2026-42294","ECHO-9dd3-fd4f-da54","GHSA-jcc8-g2q4-9fxq","GO-2026-5462","MINI-4fh2-cg3m-6q93","MINI-98fq-x88p-g833","MINI-fx94-gjmv-qq56","MINI-g24w-p438-wvgc","MINI-jgfg-q5mj-v463","MINI-qpjx-ff2v-9m28","MINI-wxjx-rh5p-4h83","MINI-xwxx-53jg-98r6","ROOT-APP-GOBINARY-CVE-2026-42294"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes workflow engine","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service in Argo Workflows by sending large payloads to the webhook endpoint, exhausting server memory.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"argo_workflows","vendor":"argoproj"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, the Webhook Interceptor loads the entire request body into memory before authenticating the request or verifying its signature. This occurs on the /api/v1/events/ endpoint, which is publicly accessible (albeit intended for webhooks). An attacker can send a request with an extremely large body (e.g., multiple gigabytes), causing the Argo Server to allocate excessive memory, potentially leading to an Out-Of-Memory (OOM) crash and denial of service. This issue has been patched in versions 3.7.14 and 4.0.5.","ecosystems":["Bitnami","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":"Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor","id":"CVE-2026-42294","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":9,"n_references":4,"next":{"headline":"Argo Workflows: Exposure of artifact repository credentials","id":"CVE-2026-42295"},"packages":[{"ecosystem":"Bitnami","fixed":["3.7.14","4.0.5"],"introduced":["0","4.0.0"],"last_affected":[],"package":"argo-workflows","purl":"pkg:bitnami/argo-workflows","source":"BIT-argo-workflows-2026-42294"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows","purl":"pkg:golang/github.com/argoproj/argo-workflows","source":"GO-2026-5462"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v2","purl":"pkg:golang/github.com/argoproj/argo-workflows/v2","source":"GO-2026-5462"},{"ecosystem":"Go","fixed":["3.7.14"],"introduced":["0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v3","purl":null,"source":"GHSA-jcc8-g2q4-9fxq"},{"ecosystem":"Go","fixed":["3.7.14"],"introduced":["0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v3","purl":"pkg:golang/github.com/argoproj/argo-workflows/v3","source":"GHSA-jcc8-g2q4-9fxq"},{"ecosystem":"Go","fixed":["3.7.14"],"introduced":["0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v3","purl":"pkg:golang/github.com/argoproj/argo-workflows/v3","source":"GO-2026-5462"},{"ecosystem":"Go","fixed":["4.0.5"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v4","purl":null,"source":"GHSA-jcc8-g2q4-9fxq"},{"ecosystem":"Go","fixed":["4.0.5"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v4","purl":"pkg:golang/github.com/argoproj/argo-workflows/v4","source":"GHSA-jcc8-g2q4-9fxq"},{"ecosystem":"Go","fixed":["4.0.5"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/argoproj/argo-workflows/v4","purl":"pkg:golang/github.com/argoproj/argo-workflows/v4","source":"GO-2026-5462"}],"prev":{"headline":"SysReptor: Read-write access to personal notes by sharing-link creation with no authorization in SysReptor Professional","id":"CVE-2026-42291"},"products":["argo-workflows"],"published":"2026-05-09","related":[{"cvss_score":9.8,"headline":"Argo Workflows has unauthorized access to Argo Workflows Template","id":"CVE-2026-28229","kev_date_added":null,"published":"2026-03-11"},{"cvss_score":8.9,"headline":"Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing","id":"CVE-2026-54526","kev_date_added":null,"published":"2026-07-16"},{"cvss_score":8.9,"headline":"WorkflowTemplate Security Bypass via podSpecPatch in Strict/Secure Reference Mode","id":"CVE-2026-31892","kev_date_added":null,"published":"2026-03-11"},{"cvss_score":8.5,"headline":"Argo Workflows: Exposure of artifact repository credentials","id":"CVE-2026-42295","kev_date_added":null,"published":"2026-05-09"},{"cvss_score":8.5,"headline":"Argo Workflows Is Missing Authorization in Sync ConfigMap Provider","id":"CVE-2026-42297","kev_date_added":null,"published":"2026-05-09"},{"cvss_score":8.5,"headline":"Argo Workflows exposes artifact repository credentials in workflow-controller logs","id":"CVE-2025-62157","kev_date_added":null,"published":"2025-10-14"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["argoproj"]},"summary":"Unauthenticated attackers can cause denial of service in Argo Workflows by sending large payloads to the webhook endpoint, exhausting server memory.","url":"https://insights.sbomify.com/CVE-2026-42294/"}