{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100521 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-100521 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-100521 is a medium-severity cross-site scripting vulnerability in Cotonti, published on 26 Sep 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-2026-100521 and fix it if it is affected.\n\nWhat it is: CVE-2026-100521 is a medium-severity cross-site scripting vulnerability in Cotonti, published on 26 Sep 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-2026-100521 in the wild and no public exploit code.\n\nAffected product: Cotonti. 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-2026-100521/ (Markdown: https://insights.sbomify.com/CVE-2026-100521/index.md)","id":"CVE-2026-100521","markdown":"https://insights.sbomify.com/CVE-2026-100521/index.md","name":"CVE-2026-100521","record":{"aliases":["GHSA-9chp-6f7w-99jg"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Cotonti CMS","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in victim browsers via a malicious link in the search highlight parameter, potentially leading to account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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":"Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in the search plugin highlight parameter that performs no HTML or JavaScript escaping. Attackers can craft malicious links with injected JavaScript in the highlight parameter that executes in the browser of any visitor who opens the link, including administrators.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Cotonti through 1.0.0 Reflected XSS via search highlight parameter","id":"CVE-2026-100521","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Cotonti through 1.0.0 Reflected XSS via message.php lng parameter","id":"CVE-2026-100522"},"packages":[],"prev":{"headline":"Laranode before 1.2.1 Path Traversal in File Manager Upload Endpoint","id":"CVE-2026-100520"},"products":["Cotonti"],"published":"2026-09-26","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-29","vendors":["Cotonti"]},"summary":"Attackers can execute arbitrary JavaScript in victim browsers via a malicious link in the search highlight parameter, potentially leading to account takeover.","url":"https://insights.sbomify.com/CVE-2026-100521/"}