{"answers":{"affected":"4 open source packages ship an affected version, including mermaid.","exploited":"There is no known exploitation of CVE-2026-71436 in the wild and no public exploit code.","fix":"Upgrade mermaid to a fixed version for your release line: 10.9.8 or 11.16.1.","what":"CVE-2026-71436 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-2026-71436 and fix it if it is affected.\n\nWhat it is: CVE-2026-71436 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-2026-71436 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mermaid (npm): affected from 10.6.0; fixed in 10.9.8\n- mermaid (npm): affected from 10.6.0; fixed in 10.9.8\n- mermaid (npm): affected from 11.0.0-alpha.1; fixed in 11.16.1\n- mermaid (npm): affected from 11.0.0-alpha.1; 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-2026-71436/ (Markdown: https://insights.sbomify.com/CVE-2026-71436/index.md)","id":"CVE-2026-71436","markdown":"https://insights.sbomify.com/CVE-2026-71436/index.md","name":"CVE-2026-71436","record":{"aliases":["CLEANSTART-2026-JY09186","DEBIAN-CVE-2026-71436","GHSA-2v8p-3f2j-5mp7","MINI-2xpf-w98h-85qm","MINI-4g38-44g9-chxf","MINI-669q-8q7p-gp8p","MINI-8xg5-c7xf-r7wr","UBUNTU-CVE-2026-71436"],"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 a denial of service via infinite loop in Mermaid XY Charts by providing invalid X-Axis parameters, leading to memory exhaustion or crashes.","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-835","name":"Loop with Unreachable Exit Condition"},{"id":"CWE-1325","name":"Improperly Controlled Sequential Memory Allocation"}],"description":"Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 10.6.0 until 10.9.8 and 11.16.1, Mermaid XY Charts are vulnerable to an infinite loop denial of service in the setXAxisRangeData function when configuring an X-Axis with invalid parameters. Because each loop iteration appends an element to an array, this generally causes a RangeError to appear after a few seconds, but it may instead cause the page or JavaScript process to crash from memory exhaustion, depending on the environment. This issue is fixed in versions 10.9.8 and 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 XY Charts are vulnerable to an infinite loop DoS","id":"CVE-2026-71436","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":6,"next":{"headline":"Mermaid Architecture diagrams are vulnerable to prototype pollution","id":"CVE-2026-71437"},"packages":[{"ecosystem":"npm","fixed":["10.9.8"],"introduced":["10.6.0"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-2v8p-3f2j-5mp7"},{"ecosystem":"npm","fixed":["10.9.8"],"introduced":["10.6.0"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-2v8p-3f2j-5mp7"},{"ecosystem":"npm","fixed":["11.16.1"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-2v8p-3f2j-5mp7"},{"ecosystem":"npm","fixed":["11.16.1"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-2v8p-3f2j-5mp7"}],"prev":{"headline":"Statamic: Stored Cross-Site Scripting in Automagic Form Notification Email Template","id":"CVE-2026-71435"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-07","vendors":["mermaid-js"]},"summary":"Attackers can cause a denial of service via infinite loop in Mermaid XY Charts by providing invalid X-Axis parameters, leading to memory exhaustion or crashes.","url":"https://insights.sbomify.com/CVE-2026-71436/"}