{"answers":{"affected":"3 open source packages ship an affected version, including github.com/Tencent/WeKnora. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30857 exists.","fix":"Upgrade github.com/Tencent/WeKnora to 0.3.0 or later.","what":"CVE-2026-30857 is a medium-severity missing authorization vulnerability in Tencent WeKnora, published on 7 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-30857 and fix it if it is affected.\n\nWhat it is: CVE-2026-30857 is a medium-severity missing authorization vulnerability in Tencent WeKnora, published on 7 Mar 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-2026-30857 exists.\n\nAffected packages and fixed versions:\n- github.com/Tencent/WeKnora (Go): affected all versions; no fix listed\n- github.com/Tencent/WeKnora (Go): affected all versions; fixed in 0.3.0\n- github.com/Tencent/WeKnora (Go): affected all versions; fixed in 0.3.0\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-2026-30857/ (Markdown: https://insights.sbomify.com/CVE-2026-30857/index.md)","id":"CVE-2026-30857","markdown":"https://insights.sbomify.com/CVE-2026-30857/index.md","name":"CVE-2026-30857","record":{"aliases":["GHSA-8rf9-c59g-f82f","GO-2026-4640"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"LLM document framework","requires_auth":"low_privilege","summary":"Authenticated users can clone other tenants' knowledge bases by guessing IDs, leading to cross-tenant data exfiltration.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"weknora","vendor":"tencent"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a cross-tenant authorization bypass in the knowledge base copy endpoint allows any authenticated user to clone (duplicate) another tenant’s knowledge base into their own tenant by knowing/guessing the source knowledge base ID. This enables bulk data exfiltration (document/FAQ content) across tenants. This issue has been patched in version 0.3.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"WeKnora: Unauthorized Cross‑Tenant Knowledge Base Cloning","id":"CVE-2026-30857","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"WeKnora: DNS Rebinding Vulnerability in web_fetch Tool Allows SSRF to Internal Resources","id":"CVE-2026-30858"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/Tencent/WeKnora","purl":"pkg:golang/github.com/Tencent/WeKnora","source":"GO-2026-4640"},{"ecosystem":"Go","fixed":["0.3.0"],"introduced":["0"],"last_affected":[],"package":"github.com/Tencent/WeKnora","purl":null,"source":"GHSA-8rf9-c59g-f82f"},{"ecosystem":"Go","fixed":["0.3.0"],"introduced":["0"],"last_affected":[],"package":"github.com/Tencent/WeKnora","purl":"pkg:golang/github.com/Tencent/WeKnora","source":"GHSA-8rf9-c59g-f82f"}],"prev":{"headline":"WeKnora: Tool Execution Hijacking via Ambigous Naming Convention In MCP client and Indirect Prompt Injection","id":"CVE-2026-30856"},"products":["WeKnora"],"published":"2026-03-07","related":[{"cvss_score":10,"headline":"WeKnora: Remote Code Execution via SQL Injection Bypass in AI Database Query Tool","id":"CVE-2026-30860","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":10,"headline":"WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation","id":"CVE-2026-30861","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":10,"headline":"WeKnora has Command Injection in MCP stdio test","id":"CVE-2026-22688","kev_date_added":null,"published":"2026-01-10"},{"cvss_score":8.8,"headline":"WeKnora: Broken Access Control in Tenant Management","id":"CVE-2026-30855","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":6.9,"headline":"Tencent WeKnora test testEmbeddingModel server-side request forgery","id":"CVE-2025-11046","kev_date_added":null,"published":"2025-09-26"},{"cvss_score":6.5,"headline":"WeKnora: DNS Rebinding Vulnerability in web_fetch Tool Allows SSRF to Internal Resources","id":"CVE-2026-30858","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":5.9,"headline":"WeKnora: SSRF via Redirection","id":"CVE-2026-30247","kev_date_added":null,"published":"2026-03-07"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-09","vendors":["Tencent"]},"summary":"Authenticated users can clone other tenants' knowledge bases by guessing IDs, leading to cross-tenant data exfiltration.","url":"https://insights.sbomify.com/CVE-2026-30857/"}