{"answers":{"affected":"6 open source packages ship an affected version, including praisonaiagents, PraisonAI and praisonai. It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40289 exists.","fix":"Upgrade praisonaiagents to 1.5.140 or later.","what":"CVE-2026-40289 is a critical missing authorization vulnerability in MervinPraison PraisonAI, published on 14 Apr 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-2026-40289 and fix it if it is affected.\n\nWhat it is: CVE-2026-40289 is a critical missing authorization vulnerability in MervinPraison PraisonAI, published on 14 Apr 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-2026-40289 exists.\n\nAffected packages and fixed versions:\n- praisonaiagents (PyPI): affected all versions; fixed in 1.5.140\n- praisonaiagents (PyPI): affected all versions; fixed in 1.5.140\n- praisonaiagents (PyPI): affected all versions; fixed in 1.5.140\n- PraisonAI (PyPI): affected all versions; fixed in 4.5.139\n- praisonai (PyPI): affected all versions; fixed in 4.5.139\n- praisonai (PyPI): affected all versions; fixed in 4.5.139\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-2026-40289/ (Markdown: https://insights.sbomify.com/CVE-2026-40289/index.md)","id":"CVE-2026-40289","markdown":"https://insights.sbomify.com/CVE-2026-40289/index.md","name":"CVE-2026-40289","record":{"aliases":["GHSA-8x8f-54wf-vv92","PYSEC-2026-467","PYSEC-2026-485"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Python AI agent library","requires_auth":"none","summary":"Unauthenticated attackers can hijack browser automation sessions in PraisonAI, gaining remote control and accessing sensitive data.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"praisonai","vendor":"praison"},{"product":"praisonaiagents","vendor":"praison"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the browser bridge (praisonai browser start) is vulnerable to unauthenticated remote session hijacking due to missing authentication and a bypassable origin check on its /ws WebSocket endpoint. The server binds to 0.0.0.0 by default and only validates the Origin header when one is present, meaning any non-browser client that omits the header is accepted without restriction. An unauthenticated network attacker can connect, send a start_session message, and the server will route it to the first idle browser-extension WebSocket (effectively hijacking that session) and then broadcast all resulting automation actions and outputs back to the attacker. This enables unauthorized remote control of connected browser automation sessions, leakage of sensitive page context and automation results, and misuse of model-backed browser actions in any environment where the bridge is network-reachable. This issue has been fixed in versions 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions","id":"CVE-2026-40289","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"OP-TEE has a Use-After-Free race in FF-A shared-memory teardown","id":"CVE-2026-40290"},"packages":[{"ecosystem":"PyPI","fixed":["4.5.139"],"introduced":["0"],"last_affected":[],"package":"PraisonAI","purl":null,"source":"GHSA-8x8f-54wf-vv92"},{"ecosystem":"PyPI","fixed":["4.5.139"],"introduced":["0"],"last_affected":[],"package":"praisonai","purl":"pkg:pypi/praisonai","source":"GHSA-8x8f-54wf-vv92"},{"ecosystem":"PyPI","fixed":["4.5.139"],"introduced":["0"],"last_affected":[],"package":"praisonai","purl":"pkg:pypi/praisonai","source":"PYSEC-2026-467"},{"ecosystem":"PyPI","fixed":["1.5.140"],"introduced":["0"],"last_affected":[],"package":"praisonaiagents","purl":null,"source":"GHSA-8x8f-54wf-vv92"},{"ecosystem":"PyPI","fixed":["1.5.140"],"introduced":["0"],"last_affected":[],"package":"praisonaiagents","purl":"pkg:pypi/praisonaiagents","source":"GHSA-8x8f-54wf-vv92"},{"ecosystem":"PyPI","fixed":["1.5.140"],"introduced":["0"],"last_affected":[],"package":"praisonaiagents","purl":"pkg:pypi/praisonaiagents","source":"PYSEC-2026-485"}],"prev":{"headline":"PraisonAI: Critical RCE via `type: job` workflow YAML","id":"CVE-2026-40288"},"products":["PraisonAI","praisonaiagents"],"published":"2026-04-14","related":[{"cvss_score":10,"headline":"PraisonAIAgents has a sandbox escape via exception frame traversal in `execute_code` (subprocess mode)","id":"CVE-2026-39888","kev_date_added":null,"published":"2026-04-08"},{"cvss_score":9.8,"headline":"Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI","id":"CVE-2026-41497","kev_date_added":null,"published":"2026-05-08"},{"cvss_score":9.8,"headline":"PraisonAI: Critical RCE via `type: job` workflow YAML","id":"CVE-2026-40288","kev_date_added":null,"published":"2026-04-14"},{"cvss_score":9.8,"headline":"PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading","id":"CVE-2026-39890","kev_date_added":null,"published":"2026-04-08"},{"cvss_score":9.8,"headline":"PraisonAI: Second-Order SQL Injection in `get_all_user_threads`","id":"CVE-2026-34934","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":9.8,"headline":"PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()","id":"CVE-2026-34935","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":9.7,"headline":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in praisonai","id":"CVE-2026-40088","kev_date_added":null,"published":"2026-04-09"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-14","vendors":["MervinPraison"]},"summary":"Unauthenticated attackers can hijack browser automation sessions in PraisonAI, gaining remote control and accessing sensitive data.","url":"https://insights.sbomify.com/CVE-2026-40289/"}