{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-8235 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-8235 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-8235 is a medium-severity missing authorization vulnerability in Nextcloud Deck app, published on 5 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8235 and fix it if it is affected.\n\nWhat it is: CVE-2020-8235 is a medium-severity missing authorization vulnerability in Nextcloud Deck app, published on 5 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-8235 in the wild and no public exploit code.\n\nAffected product: Nextcloud Deck app. 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-2020-8235/ (Markdown: https://insights.sbomify.com/CVE-2020-8235/index.md)","id":"CVE-2020-8235","markdown":"https://insights.sbomify.com/CVE-2020-8235/index.md","name":"CVE-2020-8235","record":{"aliases":["GHSA-crm5-43pc-vrcg"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Deck app","requires_auth":"low_privilege","summary":"An attacker can view all attachments in Nextcloud Deck due to missing access control checks on object references.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"deck","vendor":"nextcloud"}],"cvss":{"score":4.3,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Missing access control in Nextcloud Deck 1.0.4 caused an insecure direct object reference allowing an attacker to view all attachments.","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":"Missing authorization in Nextcloud Deck app","id":"CVE-2020-8235","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Security feature bypass in Nextcloud Server","id":"CVE-2020-8236"},"packages":[],"prev":{"headline":"Command injection in EdgeSwitch firmware v1.9.0 and prior","id":"CVE-2020-8234"},"products":["Nextcloud Deck app"],"published":"2020-10-05","related":[{"cvss_score":8.1,"headline":"Missing permission check on Deck API","id":"CVE-2021-39225","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":8,"headline":"Missing authorization in Nextcloud Deck","id":"CVE-2020-8182","kev_date_added":null,"published":"2020-10-05"},{"cvss_score":6.5,"headline":"Circle can be accessed by non-Circle members in Nextcloud Deck","id":"CVE-2021-37631","kev_date_added":null,"published":"2021-09-07"},{"cvss_score":6.5,"headline":"Information disclosure in Nextcloud Deck","id":"CVE-2021-22913","kev_date_added":null,"published":"2021-06-11"},{"cvss_score":5.8,"headline":"Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache","id":"CVE-2023-22469","kev_date_added":null,"published":"2023-01-10"},{"cvss_score":5.4,"headline":"Nextcloud Deck app allowed user with \"Can share\" permission to modify permissions of other non-owners","id":"CVE-2025-66557","kev_date_added":null,"published":"2025-12-05"},{"cvss_score":5,"headline":"Possibility for anyone to add a stack with existing tasks on anyone's board in Nextcloud Deck","id":"CVE-2022-29159","kev_date_added":null,"published":"2022-05-20"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can view all attachments in Nextcloud Deck due to missing access control checks on object references.","url":"https://insights.sbomify.com/CVE-2020-8235/"}