{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18998 exists.","fix":"No fix has been published for CVE-2026-18998 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18998 is a medium-severity missing authorization vulnerability in cosmicstack-labs mercury-agent, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18998 and fix it if it is affected.\n\nWhat it is: CVE-2026-18998 is a medium-severity missing authorization vulnerability in cosmicstack-labs mercury-agent, published on 6 Aug 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-2026-18998 exists.\n\nAffected product: cosmicstack-labs mercury-agent. 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-2026-18998/ (Markdown: https://insights.sbomify.com/CVE-2026-18998/index.md)","id":"CVE-2026-18998","markdown":"https://insights.sbomify.com/CVE-2026-18998/index.md","name":"CVE-2026-18998","record":{"aliases":["GHSA-7hmv-r6w5-pr73"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"mercury-agent library","requires_auth":"low_privilege","summary":"Remote attackers can bypass authorization checks in the delegate_task tool to execute unauthorized sub-agent operations.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-285","name":"Improper Authorization"},{"id":"CWE-266","name":"Incorrect Privilege Assignment"}],"description":"A vulnerability was determined in cosmicstack-labs mercury-agent up to 1.1.12. Impacted is the function SubAgent.run of the file src/core/sub-agent.ts of the component delegate_task Tool. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"cosmicstack-labs mercury-agent delegate_task Tool sub-agent.ts SubAgent.run improper authorization","id":"CVE-2026-18998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"JeecgBoot Anonymous Chat Attachment send server-side request forgery","id":"CVE-2026-19000"},"packages":[],"prev":{"headline":"cosmicstack-labs mercury-agent bg agent.ts Agent.handleBgCommand authorization","id":"CVE-2026-18997"},"products":["mercury-agent"],"published":"2026-08-06","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-06","vendors":["cosmicstack-labs"]},"summary":"Remote attackers can bypass authorization checks in the delegate_task tool to execute unauthorized sub-agent operations.","url":"https://insights.sbomify.com/CVE-2026-18998/"}