{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43638 exists.","fix":"No fix has been published for CVE-2026-43638 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43638 is a medium-severity missing authorization vulnerability in bitwarden server, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43638 and fix it if it is affected.\n\nWhat it is: CVE-2026-43638 is a medium-severity missing authorization vulnerability in bitwarden server, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43638 exists.\n\nAffected product: bitwarden server. 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-2026-43638/ (Markdown: https://insights.sbomify.com/CVE-2026-43638/index.md)","id":"CVE-2026-43638","markdown":"https://insights.sbomify.com/CVE-2026-43638/index.md","name":"CVE-2026-43638","record":{"aliases":["GHSA-vvm4-hc77-cqmc"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Bitwarden Server","requires_auth":"low_privilege","summary":"An authenticated attacker can write ciphers to any organization by bypassing permission checks during import.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"server","vendor":"bitwarden"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via `POST /ciphers/import-organization` by submitting an empty `collections` array, which causes the server-side permission check to be skipped.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Bitwarden Server \u003c 2026.4.1 Missing Authorization via Organization Cipher Import","id":"CVE-2026-43638","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Bitwarden Server \u003c 2026.4.0 Missing Authorization via Provider Clients","id":"CVE-2026-43639"},"packages":[],"prev":{"headline":"Cornac \u003c 2.6.0 Path Traversal via _extract_archive() in download.py","id":"CVE-2026-43637"},"products":["server"],"published":"2026-05-11","related":[{"cvss_score":9.3,"headline":"Bitwarden Server \u003c 2026.6.0 Authorization Bypass via Admin Auth Request","id":"CVE-2026-60104","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":8.9,"headline":"Bitwarden Server \u003c 2026.4.0 Missing Authorization via Provider Clients","id":"CVE-2026-43639","kev_date_added":null,"published":"2026-05-11"},{"cvss_score":8.6,"headline":"Bitwarden Server \u003c 2026.4.1 Authentication Bypass via SCIM API Key","id":"CVE-2026-43640","kev_date_added":null,"published":"2026-05-11"},{"cvss_score":7.5,"headline":"Server-side request forgery in n/a","id":"CVE-2020-15879","kev_date_added":null,"published":"2020-07-21"},{"cvss_score":7.5,"headline":"Weak cryptography in n/a","id":"CVE-2019-19766","kev_date_added":null,"published":"2019-12-12"},{"cvss_score":7.1,"headline":"Bitwarden Server \u003c 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint","id":"CVE-2026-57520","kev_date_added":null,"published":"2026-06-25"},{"cvss_score":5.3,"headline":"Bitwarden Server \u003c 2026.5.0 Broken Access Control via PreviewInvoiceController","id":"CVE-2026-57521","kev_date_added":null,"published":"2026-06-25"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-14","vendors":["bitwarden"]},"summary":"An authenticated attacker can write ciphers to any organization by bypassing permission checks during import.","url":"https://insights.sbomify.com/CVE-2026-43638/"}