{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100835 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-100835 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-100835 is a critical vulnerability in edgelesssys contrast, published on 27 Sep 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-2026-100835 and fix it if it is affected.\n\nWhat it is: CVE-2026-100835 is a critical vulnerability in edgelesssys contrast, published on 27 Sep 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-2026-100835 in the wild and no public exploit code.\n\nAffected product: edgelesssys contrast. 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-2026-100835/ (Markdown: https://insights.sbomify.com/CVE-2026-100835/index.md)","id":"CVE-2026-100835","markdown":"https://insights.sbomify.com/CVE-2026-100835/index.md","name":"CVE-2026-100835","record":{"aliases":["GHSA-hjgc-jc5v-fw7h","GHSA-jw33-f4wc-8736"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["security_bypass","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Contrast attestation service","requires_auth":"none","summary":"Attackers can bypass remote attestation by relaying valid reports from compromised hardware, impersonating trusted components in Contrast's attested TLS.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"Contrast before 1.16.0 is susceptible to remote attestation relay attacks. Contrast accepted any TEE attestation report that verified correctly and contained the expected firmware patch levels and software measurements, regardless of which machine produced it, so attestation was not bound to specific, physically trusted hardware. An attacker who can both intercept network traffic between the CLI and the Coordinator (or between the Coordinator and an attested component) and forge reports or extract secrets from any single TEE machine under their physical control can relay such a report to impersonate a Contrast Coordinator or a Contrast workload, defeating identity verification in Contrast's attested TLS (aTLS).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-27","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-27T10:53:39Z","kind":"github_poc","ref":"https://github.com/murrez/CVE-2026-100835","stars":0,"title":"CVE-2026-100835 PoC: Edgeless Contrast \u003c1.16.0 remote attestation relay (aTLS / CWE-295). Manifest audit (AllowedChipIDs/AllowedPIIDs), version \u0026 coordinator probe. https://pocbit.org/pocs/cve-2026-100835"}],"tier":"poc_unverified"},"has_fix":false,"headline":"Contrast before 1.16.0 Remote Attestation Relay Attack","id":"CVE-2026-100835","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer","id":"CVE-2026-100836"},"packages":[],"prev":{"headline":"http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass","id":"CVE-2026-100834"},"products":["contrast"],"published":"2026-09-27","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-30","vendors":["edgelesssys"]},"summary":"Attackers can bypass remote attestation by relaying valid reports from compromised hardware, impersonating trusted components in Contrast's attested TLS.","url":"https://insights.sbomify.com/CVE-2026-100835/"}