{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4958 exists.","fix":"No fix has been published for CVE-2026-4958 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-4958 is a low-severity missing authorization vulnerability in OpenBMB XAgent, published on 27 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-2026-4958 and fix it if it is affected.\n\nWhat it is: CVE-2026-4958 is a low-severity missing authorization vulnerability in OpenBMB XAgent, published on 27 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-2026-4958 exists.\n\nAffected product: OpenBMB XAgent. 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-2026-4958/ (Markdown: https://insights.sbomify.com/CVE-2026-4958/index.md)","id":"CVE-2026-4958","markdown":"https://insights.sbomify.com/CVE-2026-4958/index.md","name":"CVE-2026-4958","record":{"aliases":["GHSA-pj48-vv9m-5qqf"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"XAgent WebSocket endpoint","requires_auth":"low_privilege","summary":"Attackers can bypass authorization in the XAgent WebSocket endpoint by manipulating interaction_id, potentially accessing restricted replay data.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"xagent","vendor":"openbmb"}],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"},{"id":"CWE-285","name":"Improper Authorization"}],"description":"A vulnerability has been found in OpenBMB XAgent 1.0.0. This affects the function ReplayServer.on_connect/ReplayServer.send_data of the file XAgentServer/application/websockets/replayer.py of the component WebSocket Endpoint. Such manipulation of the argument interaction_id leads to authorization bypass. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"OpenBMB XAgent WebSocket Endpoint replayer.py ReplayServer.send_data authorization","id":"CVE-2026-4958","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication","id":"CVE-2026-4959"},"packages":[],"prev":{"headline":"OpenBMB XAgent API Key function_handler.py FunctionHandler.handle_tool_call log file","id":"CVE-2026-4957"},"products":["XAgent"],"published":"2026-03-27","related":[{"cvss_score":6.9,"headline":"OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication","id":"CVE-2026-4959","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":5.3,"headline":"OpenBMB XAgent Privileged Mode sandbox","id":"CVE-2024-2007","kev_date_added":null,"published":"2024-02-29"},{"cvss_score":5.1,"headline":"OpenBMB XAgent API Key function_handler.py FunctionHandler.handle_tool_call log file","id":"CVE-2026-4957","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":5.1,"headline":"OpenBMB XAgent community path traversal","id":"CVE-2025-6281","kev_date_added":null,"published":"2025-06-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-03-30","vendors":["OpenBMB"]},"summary":"Attackers can bypass authorization in the XAgent WebSocket endpoint by manipulating interaction_id, potentially accessing restricted replay data.","url":"https://insights.sbomify.com/CVE-2026-4958/"}