{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-37886 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2024-37886 yet. Limit exposure of the affected software until one is available.","what":"CVE-2024-37886 is a medium-severity authentication bypass vulnerability in nextcloud security-advisories, published on 14 Jun 2024. 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-2024-37886 and fix it if it is affected.\n\nWhat it is: CVE-2024-37886 is a medium-severity authentication bypass vulnerability in nextcloud security-advisories, published on 14 Jun 2024. 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-2024-37886 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-2024-37886/ (Markdown: https://insights.sbomify.com/CVE-2024-37886/index.md)","id":"CVE-2024-37886","markdown":"https://insights.sbomify.com/CVE-2024-37886/index.md","name":"CVE-2024-37886","record":{"aliases":["GHSA-vw5h-29xf-g55g"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud OIDC plugin","requires_auth":"low_privilege","summary":"Attackers can bypass authentication in Nextcloud's user_oidc app by submitting unsigned or expired ID4me tokens, potentially gaining unauthorized access.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"user_oidc","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-347","name":"Improper Verification of Cryptographic Signature"}],"description":"user_oidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app into accepting a request that is not signed by the correct server. It is recommended that the Nextcloud user_oidc app is upgraded to 1.3.5, 2.0.0, 3.0.0, 4.0.0 or 5.0.0.","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 user_oidc's ID4me does not validate signature or expiration","id":"CVE-2024-37886","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2024"},"n_packages":0,"n_references":3,"next":{"headline":"Nextcloud Server's events information leaked with shared calendars on recurrence exceptions","id":"CVE-2024-37887"},"packages":[],"prev":{"headline":"Code injection in Nextcloud Desktop Client for macOS","id":"CVE-2024-37885"},"products":["security-advisories"],"published":"2024-06-14","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":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":4.8,"headline":"CSRF protection on user_oidc login returned the expected token in case of an error","id":"CVE-2023-28848","kev_date_added":null,"published":"2023-04-04"},{"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":"2024-08-02","vendors":["nextcloud"]},"summary":"Attackers can bypass authentication in Nextcloud's user_oidc app by submitting unsigned or expired ID4me tokens, potentially gaining unauthorized access.","url":"https://insights.sbomify.com/CVE-2024-37886/"}