{"answers":{"affected":"4 open source packages ship an affected version, including mermaid. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41150 exists.","fix":"Upgrade mermaid to a fixed version for your release line: 10.9.6 or 11.15.0.","what":"CVE-2026-41150 is a medium-severity denial of service vulnerability in mermaid-js mermaid, published on 29 May 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-2026-41150 and fix it if it is affected.\n\nWhat it is: CVE-2026-41150 is a medium-severity denial of service vulnerability in mermaid-js mermaid, published on 29 May 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41150 exists.\n\nAffected packages and fixed versions:\n- mermaid (npm): affected all versions; fixed in 10.9.6\n- mermaid (npm): affected all versions; fixed in 10.9.6\n- mermaid (npm): affected from 11.0.0-alpha.1; fixed in 11.15.0\n- mermaid (npm): affected from 11.0.0-alpha.1; fixed in 11.15.0\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-2026-41150/ (Markdown: https://insights.sbomify.com/CVE-2026-41150/index.md)","id":"CVE-2026-41150","markdown":"https://insights.sbomify.com/CVE-2026-41150/index.md","name":"CVE-2026-41150","record":{"aliases":["DEBIAN-CVE-2026-41150","GHSA-6m6c-36f7-fhxh","MINI-53mm-55gm-wj49","MINI-mm89-8xhw-wm72","UBUNTU-CVE-2026-41150"],"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":"An attacker can cause a denial of service in Mermaid by crafting a Gantt chart that triggers an infinite loop during rendering.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"mermaid","vendor":"mermaid_project"}],"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"}],"description":"Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.6 and 11.15.0, there is a denial-of-service attack when rendering gantt charts, if they use the excludes attribute to exclude all dates. mermaid.parse is unaffected, unless you then call the ganttDb.getTasks() (which is called when rendering a diagram). This vulnerability is fixed in 10.9.6 and 11.15.0.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS","id":"CVE-2026-41150","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Command injection in Junie","id":"CVE-2026-41153"},"packages":[{"ecosystem":"npm","fixed":["10.9.6"],"introduced":["0"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-6m6c-36f7-fhxh"},{"ecosystem":"npm","fixed":["10.9.6"],"introduced":["0"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-6m6c-36f7-fhxh"},{"ecosystem":"npm","fixed":["11.15.0"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-6m6c-36f7-fhxh"},{"ecosystem":"npm","fixed":["11.15.0"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-6m6c-36f7-fhxh"}],"prev":{"headline":"Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection","id":"CVE-2026-41149"},"products":["mermaid"],"published":"2026-05-29","related":[{"cvss_score":7.2,"headline":"Incorrect sanitisation function leads to `XSS`","id":"CVE-2021-43861","kev_date_added":null,"published":"2021-12-30"},{"cvss_score":6.1,"headline":"Cross-site Scripting in Mermaid","id":"CVE-2021-35513","kev_date_added":null,"published":"2021-06-27"},{"cvss_score":5.3,"headline":"Mermaid: Improper sanitization of configuration leads to CSS injection","id":"CVE-2026-41159","kev_date_added":null,"published":"2026-05-29"},{"cvss_score":5.1,"headline":"Mermaid does not properly sanitize architecture diagram iconText leading to XSS","id":"CVE-2025-54880","kev_date_added":null,"published":"2025-08-19"},{"cvss_score":4.1,"headline":"Arbitrary `CSS` injection into the generated graph affecting the container HTML in mermaid.js","id":"CVE-2022-31108","kev_date_added":null,"published":"2022-06-28"}],"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":"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":"2026-05-29","vendors":["mermaid-js"]},"summary":"An attacker can cause a denial of service in Mermaid by crafting a Gantt chart that triggers an infinite loop during rendering.","url":"https://insights.sbomify.com/CVE-2026-41150/"}