{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-23942 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2023-23942 is a medium-severity cross-site scripting vulnerability in nextcloud security-advisories, published on 6 Feb 2023. 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-2023-23942 and fix it if it is affected.\n\nWhat it is: CVE-2023-23942 is a medium-severity cross-site scripting vulnerability in nextcloud security-advisories, published on 6 Feb 2023. 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-2023-23942 in the wild and no public exploit code.\n\nAffected product: nextcloud security-advisories. 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-2023-23942/ (Markdown: https://insights.sbomify.com/CVE-2023-23942/index.md)","id":"CVE-2023-23942","markdown":"https://insights.sbomify.com/CVE-2023-23942/index.md","name":"CVE-2023-23942","record":{"aliases":["DEBIAN-CVE-2023-23942","GHSA-64qc-vf6v-8xgg","UBUNTU-CVE-2023-23942"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Desktop Client","requires_auth":"low_privilege","summary":"An attacker can inject JavaScript into the Nextcloud Desktop Client UI via unsanitized HTML labels, potentially executing arbitrary code.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"desktop","vendor":"nextcloud"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer. Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are no known workarounds for this issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Self reflected HTML injection in Desktop client","id":"CVE-2023-23942","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"Blind SSRF via server URL input in the Nextcloud Mail app","id":"CVE-2023-23943"},"packages":[],"prev":{"headline":"SwagPayPal payment not sent to PayPal correctly","id":"CVE-2023-23941"},"products":["security-advisories"],"published":"2023-02-06","related":[{"cvss_score":9.1,"headline":"Misconfiguration in n/a","id":"CVE-2024-46958","kev_date_added":null,"published":"2024-09-16"},{"cvss_score":7.8,"headline":"Code injection in Desktop Client","id":"CVE-2020-8224","kev_date_added":null,"published":"2020-08-10"},{"cvss_score":7.5,"headline":"Information disclosure in Desktop Client","id":"CVE-2020-8225","kev_date_added":null,"published":"2020-09-18"},{"cvss_score":7.3,"headline":"Untrusted Search Path in Nextcloud Desktop Client","id":"CVE-2021-37617","kev_date_added":null,"published":"2021-08-18"},{"cvss_score":6.9,"headline":"Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders","id":"CVE-2023-28999","kev_date_added":null,"published":"2023-04-04"},{"cvss_score":6.8,"headline":"Path traversal in Desktop Client","id":"CVE-2020-8227","kev_date_added":null,"published":"2020-08-21"},{"cvss_score":6.7,"headline":"Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files","id":"CVE-2023-28997","kev_date_added":null,"published":"2023-04-04"}],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-03-10","vendors":["nextcloud"]},"summary":"An attacker can inject JavaScript into the Nextcloud Desktop Client UI via unsanitized HTML labels, potentially executing arbitrary code.","url":"https://insights.sbomify.com/CVE-2023-23942/"}