{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66481 exists.","fix":"No fix has been published for CVE-2025-66481 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-66481 is a critical cross-site scripting vulnerability in ThinkInAIXYZ deepchat, published on 9 Dec 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-2025-66481 and fix it if it is affected.\n\nWhat it is: CVE-2025-66481 is a critical cross-site scripting vulnerability in ThinkInAIXYZ deepchat, published on 9 Dec 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-2025-66481 exists.\n\nAffected product: ThinkInAIXYZ deepchat. 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-2025-66481/ (Markdown: https://insights.sbomify.com/CVE-2025-66481/index.md)","id":"CVE-2025-66481","markdown":"https://insights.sbomify.com/CVE-2025-66481/index.md","name":"CVE-2025-66481","record":{"aliases":["GHSA-h9f5-7hhf-fqm4"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"AI chat platform","requires_auth":"none","summary":"Attackers can achieve remote code execution on victim machines via XSS in DeepChat's Mermaid content rendering due to insufficient sanitization.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"deepchat","vendor":"thinkinai"}],"cvss":{"score":9.7,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-80","name":"Improper Neutralization of Script-Related HTML Tags in a Web Page"},{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"DeepChat is an open-source AI chat platform that supports cloud models and LLMs. Versions 0.5.1 and below are vulnerable to XSS attacks through improperly sanitized Mermaid content. The recent security patch for MermaidArtifact.vue is insufficient and can be bypassed using unquoted HTML attributes combined with HTML entity encoding. Remote Code Execution is possible on the victim's machine via the electron.ipcRenderer interface, bypassing the regex filter intended to strip dangerous attributes. There is no fix at time of publication.","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":"DeepChat's Incomplete XSS Fix Allows RCE through Mermaid Content","id":"CVE-2025-66481","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Misskey has a login rate limit bypass via spoofed X-Forwarded-For header","id":"CVE-2025-66482"},"packages":[],"prev":{"headline":"Wildfire has Arbitrary File Upload via Directory Traversal in UploadFileAction","id":"CVE-2025-66480"},"products":["deepchat"],"published":"2025-12-09","related":[{"cvss_score":9.7,"headline":"Mermaid XSS vulnerability leads to Remote Code Execution","id":"CVE-2025-67744","kev_date_added":null,"published":"2025-12-16"},{"cvss_score":9.7,"headline":"DeepChat Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)","id":"CVE-2025-66222","kev_date_added":null,"published":"2025-12-03"},{"cvss_score":9.7,"headline":"DeepChat's Mermaid rendering has XSS leading to RCE","id":"CVE-2025-58768","kev_date_added":null,"published":"2025-09-09"},{"cvss_score":9.7,"headline":"DeepChat One-click Remote Code Execution through Custom URL Handling","id":"CVE-2025-55733","kev_date_added":null,"published":"2025-08-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-12-09","vendors":["ThinkInAIXYZ"]},"summary":"Attackers can achieve remote code execution on victim machines via XSS in DeepChat's Mermaid content rendering due to insufficient sanitization.","url":"https://insights.sbomify.com/CVE-2025-66481/"}