{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-59354 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-59354 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-59354 is a critical cross-site scripting vulnerability in VMware by Broadcom Spring Security (OAuth2 Authorization Server module), published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-59354 and fix it if it is affected.\n\nWhat it is: CVE-2026-59354 is a critical cross-site scripting vulnerability in VMware by Broadcom Spring Security (OAuth2 Authorization Server module), published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-59354 in the wild and no public exploit code.\n\nAffected product: VMware by Broadcom Spring Security (OAuth2 Authorization Server module). 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-2026-59354/ (Markdown: https://insights.sbomify.com/CVE-2026-59354/index.md)","id":"CVE-2026-59354","markdown":"https://insights.sbomify.com/CVE-2026-59354/index.md","name":"CVE-2026-59354","record":{"aliases":["GHSA-j9pv-5342-rrx5"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Spring Security OAuth2","requires_auth":"low_privilege","summary":"Attackers with valid tokens can inject malicious metadata causing XSS, privilege escalation, or SSRF in Spring Security OAuth2 Authorization Server.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"vmware","cpe":[{"product":"spring_security","vendor":"vmware"}],"cvss":{"score":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possesses a valid Initial Access Token can register a malicious client with crafted metadata, which, depending on server configuration and how the metadata is later rendered or used, may result in Stored Cross-Site Scripting (XSS), Privilege Escalation, or Server-Side Request Forgery (SSRF).","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":"Spring Security OAuth2 Authorization Server: Insufficient validation of Dynamic Client Registration metadata","id":"CVE-2026-59354","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Spring Authorization Server: Open Redirect via request_uri parameter","id":"CVE-2026-59355"},"packages":[],"prev":{"headline":"VMware Workstation and Fusion HGFS stack-based buffer-overflow vulnerability","id":"CVE-2026-59347"},"products":["Spring Security (OAuth2 Authorization Server module)"],"published":"2026-08-27","related":[{"cvss_score":9.8,"headline":"Authorization Bypass in Spring Security","id":"CVE-2014-3527","kev_date_added":null,"published":"2017-05-25"},{"cvss_score":9.4,"headline":"Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces","id":"CVE-2026-59270","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.1,"headline":"Under Some Conditions Spring Security HTTP Headers Are not Written","id":"CVE-2026-22732","kev_date_added":null,"published":"2026-03-19"},{"cvss_score":9.1,"headline":"Access Control Bypass in Spring Security","id":"CVE-2023-34034","kev_date_added":null,"published":"2023-07-19"},{"cvss_score":8.2,"headline":"Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS)","id":"CVE-2026-47877","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":8.1,"headline":"Deserialization of Untrusted Data in Spring Security","id":"CVE-2017-4995","kev_date_added":null,"published":"2017-11-27"}],"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":"total"},"state":"PUBLISHED","updated":"2026-08-28","vendors":["VMware by Broadcom"]},"summary":"Attackers with valid tokens can inject malicious metadata causing XSS, privilege escalation, or SSRF in Spring Security OAuth2 Authorization Server.","url":"https://insights.sbomify.com/CVE-2026-59354/"}