{"answers":{"affected":"4 open source packages ship an affected version, including mermaid.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-54881 exists.","fix":"Upgrade mermaid to a fixed version for your release line: 10.9.4 or 11.10.0.","what":"CVE-2025-54881 is a medium-severity cross-site scripting vulnerability in mermaid-js mermaid, published on 19 Aug 2025. 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-2025-54881 and fix it if it is affected.\n\nWhat it is: CVE-2025-54881 is a medium-severity cross-site scripting vulnerability in mermaid-js mermaid, published on 19 Aug 2025. 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-2025-54881 exists.\n\nAffected packages and fixed versions:\n- mermaid (npm): affected from 10.9.0-rc.1; fixed in 10.9.4\n- mermaid (npm): affected from 10.9.0-rc.1; fixed in 10.9.4\n- mermaid (npm): affected from 11.0.0-alpha.1; fixed in 11.10.0\n- mermaid (npm): affected from 11.0.0-alpha.1; fixed in 11.10.0\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-2025-54881/ (Markdown: https://insights.sbomify.com/CVE-2025-54881/index.md)","id":"CVE-2025-54881","markdown":"https://insights.sbomify.com/CVE-2025-54881/index.md","name":"CVE-2025-54881","record":{"aliases":["GHSA-7rqq-prvp-x9jh","UBUNTU-CVE-2025-54881"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript diagramming library","requires_auth":"none","summary":"Attackers can execute arbitrary scripts via unsanitized sequence diagram labels in the Mermaid JavaScript library.","user_interaction":"required","vuln_class":"xss"},"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:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 10.9.0-rc.1 to 11.9.0, user supplied input for sequence diagram labels is passed to innerHTML during calculation of element size, causing XSS.","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 improperly sanitizes of sequence diagram labels leading to XSS","id":"CVE-2025-54881","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2025"},"n_packages":4,"n_references":3,"next":{"headline":"Himmelblau's Kerberos credential cache collection is world readable","id":"CVE-2025-54882"},"packages":[{"ecosystem":"npm","fixed":["10.9.4"],"introduced":["10.9.0-rc.1"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-7rqq-prvp-x9jh"},{"ecosystem":"npm","fixed":["10.9.4"],"introduced":["10.9.0-rc.1"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-7rqq-prvp-x9jh"},{"ecosystem":"npm","fixed":["11.10.0"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":null,"source":"GHSA-7rqq-prvp-x9jh"},{"ecosystem":"npm","fixed":["11.10.0"],"introduced":["11.0.0-alpha.1"],"last_affected":[],"package":"mermaid","purl":"pkg:npm/mermaid","source":"GHSA-7rqq-prvp-x9jh"}],"prev":{"headline":"Mermaid does not properly sanitize architecture diagram iconText leading to XSS","id":"CVE-2025-54880"},"products":["mermaid"],"published":"2025-08-19","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-08-19","vendors":["mermaid-js"]},"summary":"Attackers can execute arbitrary scripts via unsanitized sequence diagram labels in the Mermaid JavaScript library.","url":"https://insights.sbomify.com/CVE-2025-54881/"}