{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-56451 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-56451 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-56451 is a critical authentication bypass vulnerability in Siemens Opcenter X, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-56451 and fix it if it is affected.\n\nWhat it is: CVE-2026-56451 is a critical authentication bypass vulnerability in Siemens Opcenter X, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-56451 in the wild and no public exploit code.\n\nAffected product: Siemens Opcenter X. 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-2026-56451/ (Markdown: https://insights.sbomify.com/CVE-2026-56451/index.md)","id":"CVE-2026-56451","markdown":"https://insights.sbomify.com/CVE-2026-56451/index.md","name":"CVE-2026-56451","record":{"aliases":["GHSA-j4h7-9cc4-7f3r"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens Opcenter X","requires_auth":"none","summary":"Unauthenticated attackers can forge JWTs to bypass authentication and impersonate any user, including administrators, in Siemens Opcenter X.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"A vulnerability has been identified in Opcenter X (All versions \u003c V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header.\r\nThis could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Auth bypass in Opcenter X","id":"CVE-2026-56451","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache MINA SSHD: Path traversal in SCP file reception","id":"CVE-2026-56452"},"packages":[],"prev":{"headline":"AIL Framework - Missing Rate Limiting Enables Brute-Force Attacks Against Two-Factor Authentication Codes","id":"CVE-2026-56450"},"products":["Opcenter X"],"published":"2026-07-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-14","vendors":["Siemens"]},"summary":"Unauthenticated attackers can forge JWTs to bypass authentication and impersonate any user, including administrators, in Siemens Opcenter X.","url":"https://insights.sbomify.com/CVE-2026-56451/"}