{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-66554 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-66554 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-66554 is a low-severity cross-site scripting vulnerability in nextcloud security-advisories, published on 5 Dec 2025. 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-2025-66554 and fix it if it is affected.\n\nWhat it is: CVE-2025-66554 is a low-severity cross-site scripting vulnerability in nextcloud security-advisories, published on 5 Dec 2025. 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-2025-66554 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-2025-66554/ (Markdown: https://insights.sbomify.com/CVE-2025-66554/index.md)","id":"CVE-2025-66554","markdown":"https://insights.sbomify.com/CVE-2025-66554/index.md","name":"CVE-2025-66554","record":{"aliases":["GHSA-9v78-cpfc-v6h2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Contacts app","requires_auth":"low_privilege","summary":"A malicious user can inject CSS via contact fields, bypassing some protections, requiring Nextcloud administrators to upgrade the Contacts app.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"contacts","vendor":"nextcloud"}],"cvss":{"score":3.5,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Contacts app for Nextcloud easily syncs contacts from various devices with your Nextcloud and allows editing. Prior to 5.5.4, 6.0.6, and 7.2.5, a malicious user was able to modify their organisation and title field to load additional CSS files. Javascript and other options were correctly blocked by the content security policy of the Nextcloud Server code. This vulnerability is fixed in 5.5.4, 6.0.6, and 7.2.5.","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":"Nextcloud Contacts vulnerable to Stored XSS in contacts app via organisation and title field","id":"CVE-2025-66554","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"AirKeyboard iOS App 1.0.5 - Remote Input Injection","id":"CVE-2025-66555"},"packages":[],"prev":{"headline":"Nextcloud Tables app allowed users to view columns metadata information of any table","id":"CVE-2025-66553"},"products":["security-advisories"],"published":"2025-12-05","related":[{"cvss_score":6.4,"headline":"XSS in Contacts","id":"CVE-2021-39221","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":5.4,"headline":"Cross-site scripting in Nextcloud Contacts","id":"CVE-2020-8280","kev_date_added":null,"published":"2021-01-06"},{"cvss_score":5.4,"headline":"Cross-site scripting in Nextcloud Contacts","id":"CVE-2020-8281","kev_date_added":null,"published":"2021-01-06"},{"cvss_score":4.8,"headline":"Cross-site scripting in Nextcloud Contacts application","id":"CVE-2018-3764","kev_date_added":null,"published":"2018-07-05"},{"cvss_score":4.3,"headline":"File upload in Nextcloud Contact","id":"CVE-2020-8181","kev_date_added":null,"published":"2020-07-10"},{"cvss_score":0,"headline":"Nextcloud Contacts photos only sanitized if mime type is all lower case","id":"CVE-2023-33182","kev_date_added":null,"published":"2023-05-30"}],"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":"2025-12-08","vendors":["nextcloud"]},"summary":"A malicious user can inject CSS via contact fields, bypassing some protections, requiring Nextcloud administrators to upgrade the Contacts app.","url":"https://insights.sbomify.com/CVE-2025-66554/"}