{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79787 exists.","fix":"No fix has been published for CVE-2026-79787 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-79787 is a critical authentication bypass vulnerability in alluxio, published on 25 Aug 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-2026-79787 and fix it if it is affected.\n\nWhat it is: CVE-2026-79787 is a critical authentication bypass vulnerability in alluxio, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79787 exists.\n\nAffected product: alluxio. 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-2026-79787/ (Markdown: https://insights.sbomify.com/CVE-2026-79787/index.md)","id":"CVE-2026-79787","markdown":"https://insights.sbomify.com/CVE-2026-79787/index.md","name":"CVE-2026-79787","record":{"aliases":["GHSA-53ch-3jwm-f8ch"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Alluxio S3 proxy","requires_auth":"none","summary":"Attackers can bypass authentication in Alluxio's S3 proxy to impersonate users and read, write, or delete arbitrary data.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read, write, and delete arbitrary data.","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":"Alluxio through 2.9.5 S3 REST Proxy Authentication Bypass via Unverified Request Signature","id":"CVE-2026-79787","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Dradis Community Edition 5.1.0 through 5.2.0 Server-Side Request Forgery via Unrestricted AI Provider Address","id":"CVE-2026-79788"},"packages":[],"prev":{"headline":"Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration","id":"CVE-2026-79786"},"products":["alluxio"],"published":"2026-08-25","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-25","vendors":["Alluxio"]},"summary":"Attackers can bypass authentication in Alluxio's S3 proxy to impersonate users and read, write, or delete arbitrary data.","url":"https://insights.sbomify.com/CVE-2026-79787/"}