{"answers":{"affected":"2 open source packages ship an affected version, including mermaid.","exploited":"There is no known exploitation of CVE-2026-71439 in the wild and no public exploit code.","fix":"Upgrade mermaid to 11.16.1 or later.","what":"CVE-2026-71439 is a medium-severity denial of service vulnerability in mermaid-js mermaid, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-71439 and fix it if it is affected.\n\nWhat it is: CVE-2026-71439 is a medium-severity denial of service vulnerability in mermaid-js mermaid, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-71439 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mermaid (npm): affected from 11.6.0; fixed in 11.16.1\n- mermaid (npm): affected from 11.6.0; fixed in 11.16.1\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-2026-71439/ (Markdown: https://insights.sbomify.com/CVE-2026-71439/index.md)","id":"CVE-2026-71439","markdown":"https://insights.sbomify.com/CVE-2026-71439/index.md","name":"CVE-2026-71439","record":{"aliases":["CLEANSTART-2026-VU48904","DEBIAN-CVE-2026-71439","GHSA-rhh3-jpg6-66xh","MINI-j3xg-fphv-8vw4","MINI-vh8f-vjh6-396q","UBUNTU-CVE-2026-71439"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript diagramming library","requires_auth":"none","summary":"Attackers can cause denial of service in Mermaid radar diagrams by supplying large tick values, freezing the rendering process.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-606","name":"Unchecked Input for Loop Condition"},{"id":"CWE-1322","name":"Use of Blocking Code in Single-threaded, Non-blocking Context"}],"description":"Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze the rendering webpage or JavaScript process for long periods of time, potentially until the process is killed from memory exhaustion. This issue is fixed in version 11.16.1.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Mermaid radar diagrams are vulnerable to DoS","id":"CVE-2026-71439","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Adobe Experience Manager | Cross-site Scripting (Stored XSS) (CWE-79)","id":"CVE-2026-71440"},"packages":[{"ecosystem":"npm","fixed":["11.16.1"],"introduced":["11.6.0"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-rhh3-jpg6-66xh"},{"ecosystem":"npm","fixed":["11.16.1"],"introduced":["11.6.0"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-rhh3-jpg6-66xh"}],"prev":{"headline":"Mermaid configuration APIs allow prototype pollution","id":"CVE-2026-71438"},"products":["mermaid"],"published":"2026-08-06","related":[],"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":"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":"2026-08-07","vendors":["mermaid-js"]},"summary":"Attackers can cause denial of service in Mermaid radar diagrams by supplying large tick values, freezing the rendering process.","url":"https://insights.sbomify.com/CVE-2026-71439/"}