{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-8182 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-8182 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-8182 is a high-severity missing authorization vulnerability in Nextcloud Deck, published on 5 Oct 2020. 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-2020-8182 and fix it if it is affected.\n\nWhat it is: CVE-2020-8182 is a high-severity missing authorization vulnerability in Nextcloud Deck, published on 5 Oct 2020. 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-2020-8182 in the wild and no public exploit code.\n\nAffected product: Nextcloud Deck. 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-2020-8182/ (Markdown: https://insights.sbomify.com/CVE-2020-8182/index.md)","id":"CVE-2020-8182","markdown":"https://insights.sbomify.com/CVE-2020-8182/index.md","name":"CVE-2020-8182","record":{"aliases":["GHSA-9fvc-qpfc-hjxh"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Deck","requires_auth":"low_privilege","summary":"Attackers can reshare Nextcloud Deck boards with higher permissions than originally granted, leading to unauthorized access and modification.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"deck","vendor":"nextcloud"}],"cvss":{"score":8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-281","name":"Improper Preservation of Permissions"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had themselves.","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","id":"CVE-2020-8182","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":"Information disclosure in Nextcloud Server","id":"CVE-2020-8183"},"packages":[],"prev":{"headline":"File upload in Nextcloud Contact","id":"CVE-2020-8181"},"products":["Nextcloud Deck"],"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":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":"Attackers can reshare Nextcloud Deck boards with higher permissions than originally granted, leading to unauthorized access and modification.","url":"https://insights.sbomify.com/CVE-2020-8182/"}