{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-3781 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-3781 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-3781 is a medium-severity cross-site scripting vulnerability in nextcloud/talk, published on 13 Aug 2018. 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-2018-3781 and fix it if it is affected.\n\nWhat it is: CVE-2018-3781 is a medium-severity cross-site scripting vulnerability in nextcloud/talk, published on 13 Aug 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2018-3781 in the wild and no public exploit code.\n\nAffected product: nextcloud/talk. 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-2018-3781/ (Markdown: https://insights.sbomify.com/CVE-2018-3781/index.md)","id":"CVE-2018-3781","markdown":"https://insights.sbomify.com/CVE-2018-3781/index.md","name":"CVE-2018-3781","record":{"aliases":["GHSA-86ww-pfxr-g767"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"NextCloud Talk","requires_auth":"low_privilege","summary":"Authenticated users can inject malicious scripts via unsanitized usernames in NextCloud Talk autocomplete, leading to stored XSS attacks against other users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"talk","vendor":"nextcloud"}],"cvss":{"score":5.4,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"A missing sanitization of search results for an autocomplete field in NextCloud Talk \u003c3.2.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.","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":"Cross-site scripting in nextcloud/talk","id":"CVE-2018-3781","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2018"},"n_packages":0,"n_references":2,"next":{"headline":"Privilege Escalation due to Blind NoSQL Injection in flintcms","id":"CVE-2018-3783"},"packages":[],"prev":{"headline":"Cross-site scripting in nextcloud/server","id":"CVE-2018-3780"},"products":["nextcloud/talk"],"published":"2018-08-13","related":[{"cvss_score":9.9,"headline":"Code injection in Nextcloud Talk","id":"CVE-2020-8180","kev_date_added":null,"published":"2020-06-08"},{"cvss_score":8.1,"headline":"Nextcloud Talk not properly disassociating users from chats after account deletion","id":"CVE-2021-32689","kev_date_added":null,"published":"2021-07-12"},{"cvss_score":7.2,"headline":"Path traversal allows tricking the Talk Android app into writing files into it's root directory","id":"CVE-2023-39957","kev_date_added":null,"published":"2023-08-10"},{"cvss_score":6.5,"headline":"Session Fixation in Nextcloud Talk","id":"CVE-2021-32676","kev_date_added":null,"published":"2021-06-16"},{"cvss_score":6.4,"headline":"XSS in Talk","id":"CVE-2021-39222","kev_date_added":null,"published":"2021-11-15"},{"cvss_score":4.7,"headline":"Geolocation preview links can be set to arbitrary links in nextcloud talk","id":"CVE-2021-41180","kev_date_added":null,"published":"2022-03-08"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["NextCloud"]},"summary":"Authenticated users can inject malicious scripts via unsanitized usernames in NextCloud Talk autocomplete, leading to stored XSS attacks against other users.","url":"https://insights.sbomify.com/CVE-2018-3781/"}