{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56100 exists.","fix":"No fix has been published for CVE-2026-56100 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-56100 is a high-severity vulnerability in SpringBlade, published on 28 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-2026-56100 and fix it if it is affected.\n\nWhat it is: CVE-2026-56100 is a high-severity vulnerability in SpringBlade, published on 28 Aug 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-2026-56100 exists.\n\nAffected product: SpringBlade. 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-2026-56100/ (Markdown: https://insights.sbomify.com/CVE-2026-56100/index.md)","id":"CVE-2026-56100","markdown":"https://insights.sbomify.com/CVE-2026-56100/index.md","name":"CVE-2026-56100","record":{"aliases":["GHSA-pmhv-3rpv-4cgh"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"SpringBlade application framework","requires_auth":"low_privilege","summary":"Authenticated attackers can escalate privileges to administrator by exploiting an unprotected Feign endpoint and hardcoded JWT keys in SpringBlade.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"SpringBlade versions from 2.7.3 up to but not including 5.0.0 contain a privilege escalation vulnerability that allows authenticated attackers to create system administrator accounts by sending crafted POST requests to an unprotected internal Feign user-creation endpoint exposed via @RestController without authorization checks. Attackers can exploit the gateway's authentication filter, which only validates JWT parsing without verifying user roles or caller identity, and leverage a hardcoded JWT signing key embedded in publicly available JARs to forge tokens and escalate privileges from a low-privilege user to administrator, enabling cross-tenant data pollution and persistent backdoor access.","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":"SpringBlade 2.7.3 \u003c 5.0.0 Privilege Escalation via Exposed Feign Endpoint","id":"CVE-2026-56100","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"OpenBSD ieee80211_crypto_tkip.c TKIP MIC Countermeasure Logic Inversion DoS","id":"CVE-2026-56101"},"packages":[],"prev":{"headline":"OpenBSD mpls_do_error Kernel Stack Memory Disclosure via MPLS Input","id":"CVE-2026-56099"},"products":["SpringBlade"],"published":"2026-08-28","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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["SpringBlade"]},"summary":"Authenticated attackers can escalate privileges to administrator by exploiting an unprotected Feign endpoint and hardcoded JWT keys in SpringBlade.","url":"https://insights.sbomify.com/CVE-2026-56100/"}