{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-28848 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-28848 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-28848 is a medium-severity vulnerability in nextcloud security-advisories, published on 4 Apr 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-28848 and fix it if it is affected.\n\nWhat it is: CVE-2023-28848 is a medium-severity vulnerability in nextcloud security-advisories, published on 4 Apr 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-28848 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-2023-28848/ (Markdown: https://insights.sbomify.com/CVE-2023-28848/index.md)","id":"CVE-2023-28848","markdown":"https://insights.sbomify.com/CVE-2023-28848/index.md","name":"CVE-2023-28848","record":{"aliases":["GHSA-52hv-xw32-wf7f"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud OIDC plugin","requires_auth":"high_privilege","summary":"An attacker can bypass CSRF protection in the Nextcloud user_oidc plugin by reusing state tokens, potentially allowing unauthorized actions.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"user_oidc","vendor":"nextcloud"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"user_oidc is the OIDC connect user backend for Nextcloud, an open source collaboration platform. A vulnerability in versions 1.0.0 until 1.3.0 effectively allowed an attacker to bypass the state protection as they could just copy the expected state token from the first request to their second request. Users should upgrade user_oidc to 1.3.0 to receive a patch for the issue. No known workarounds are available.","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":"CSRF protection on user_oidc login returned the expected token in case of an error","id":"CVE-2023-28848","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"csrf","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"GLPI vulnerable to SQL injection and Stored XSS via inventory agent request","id":"CVE-2023-28849"},"packages":[],"prev":{"headline":"Nextcloud Server missing brute force protection for passwords of password protected share links","id":"CVE-2023-28847"},"products":["security-advisories"],"published":"2023-04-04","related":[{"cvss_score":8,"headline":"Nextcloud user_oidc app is missing brute force protection","id":"CVE-2023-32074","kev_date_added":null,"published":"2023-05-25"},{"cvss_score":6.3,"headline":"Nextcloud user_oidc app's ID4me feature is available even when disabled","id":"CVE-2024-37312","kev_date_added":null,"published":"2024-06-14"},{"cvss_score":5.4,"headline":"Nextcloud user_oidc's ID4me does not validate signature or expiration","id":"CVE-2024-37886","kev_date_added":null,"published":"2024-06-14"},{"cvss_score":4.8,"headline":"Issuer not verified from obtained token in user_oidc","id":"CVE-2023-39953","kev_date_added":null,"published":"2023-08-10"},{"cvss_score":4.6,"headline":"Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate","id":"CVE-2026-45284","kev_date_added":null,"published":"2026-06-01"},{"cvss_score":3.8,"headline":"user_oidc app stores client secret unencrypted in database","id":"CVE-2023-39954","kev_date_added":null,"published":"2023-08-10"}],"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":"2025-02-11","vendors":["nextcloud"]},"summary":"An attacker can bypass CSRF protection in the Nextcloud user_oidc plugin by reusing state tokens, potentially allowing unauthorized actions.","url":"https://insights.sbomify.com/CVE-2023-28848/"}