{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15311 exists.","fix":"No fix has been published for CVE-2026-15311 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-15311 is a medium-severity cross-site scripting vulnerability in NousResearch hermes-agent, published on 9 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-15311 and fix it if it is affected.\n\nWhat it is: CVE-2026-15311 is a medium-severity cross-site scripting vulnerability in NousResearch hermes-agent, published on 9 Jul 2026. Any signed-in user can exploit it over the network, 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-2026-15311 exists.\n\nAffected product: NousResearch hermes-agent. 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-2026-15311/ (Markdown: https://insights.sbomify.com/CVE-2026-15311/index.md)","id":"CVE-2026-15311","markdown":"https://insights.sbomify.com/CVE-2026-15311/index.md","name":"CVE-2026-15311","record":{"aliases":["GHSA-93m6-38r7-vqmh"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"AI agent framework","requires_auth":"low_privilege","summary":"Remote attackers can execute arbitrary scripts via the Matrix adapter's markdown conversion, potentially compromising user sessions or data.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"A vulnerability was identified in NousResearch hermes-agent up to 2026.5.29.2. Affected by this issue is the function MatrixAdapter._markdown_to_html of the file gateway/platforms/matrix.py of the component Matrix Adapter. Such manipulation leads to cross site scripting. The attack can be executed remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.","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":"NousResearch hermes-agent Matrix Adapter matrix.py MatrixAdapter._markdown_to_html cross site scripting","id":"CVE-2026-15311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"Privilege escalation in Propovoice: All-in-One Client Management System","id":"CVE-2026-15312"},"packages":[],"prev":{"headline":"zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits","id":"CVE-2026-15310"},"products":["hermes-agent"],"published":"2026-07-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-07-10","vendors":["NousResearch"]},"summary":"Remote attackers can execute arbitrary scripts via the Matrix adapter's markdown conversion, potentially compromising user sessions or data.","url":"https://insights.sbomify.com/CVE-2026-15311/"}