{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-16652 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-16652 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-16652 is a high-severity denial of service vulnerability in Temporal Server, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-16652 and fix it if it is affected.\n\nWhat it is: CVE-2026-16652 is a high-severity denial of service vulnerability in Temporal Server, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-16652 in the wild and no public exploit code.\n\nAffected product: Temporal Server. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-16652/ (Markdown: https://insights.sbomify.com/CVE-2026-16652/index.md)","id":"CVE-2026-16652","markdown":"https://insights.sbomify.com/CVE-2026-16652/index.md","name":"CVE-2026-16652","record":{"aliases":["GHSA-pv35-7w89-v65c"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Temporal Server","requires_auth":"low_privilege","summary":"Authenticated users can cause excessive CPU consumption and service denial by creating schedules with exclusion calendars that reject all candidate times.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Temporal","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-606","name":"Unchecked Input for Loop Condition"}],"description":"Temporal Server did not bound the work performed while searching for a Schedule's next action time. An authenticated caller with namespace write permission could create or update a Schedule that combines a fine-grained cadence with an exclusion calendar that rejects every candidate time, causing the server to evaluate excluded candidates without a per-search work budget. This can consume excessive CPU in Frontend and Schedule worker components. A persisted specification can also cause its backing Schedule Workflow to repeatedly fail and retry, allowing CPU consumption to continue without additional requests until the Schedule is deleted or its backing Workflow is terminated. Repeated or parallel exploitation can deny service. The issue affects availability only; it does not expose or modify Workflow data.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Temporal Server Schedule exclusion search can cause excessive CPU consumption","id":"CVE-2026-16652","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"boazsegev facil.io Public Folder http.c http_sendfile2 path traversal","id":"CVE-2026-16653"},"packages":[],"prev":{"headline":"temporalio/sqlparser malformed MySQL version comments can cause a panic","id":"CVE-2026-16651"},"products":["Temporal Server"],"published":"2026-09-21","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["Temporal Technologies, Inc."]},"summary":"Authenticated users can cause excessive CPU consumption and service denial by creating schedules with exclusion calendars that reject all candidate times.","url":"https://insights.sbomify.com/CVE-2026-16652/"}