{"answers":{"affected":"3 open source packages ship an affected version, including praisonai and PraisonAI.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55536 exists.","fix":"Upgrade praisonai to 4.6.58 or later.","what":"CVE-2026-55536 is a critical vulnerability in MervinPraison PraisonAI, 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-2026-55536 and fix it if it is affected.\n\nWhat it is: CVE-2026-55536 is a critical vulnerability in MervinPraison PraisonAI, 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-2026-55536 exists.\n\nAffected packages and fixed versions:\n- praisonai (PyPI): affected all versions; fixed in 4.6.58\n- praisonai (PyPI): affected all versions; fixed in 4.6.58\n- PraisonAI (PyPI): affected all versions; fixed in 4.6.58\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-2026-55536/ (Markdown: https://insights.sbomify.com/CVE-2026-55536/index.md)","id":"CVE-2026-55536","markdown":"https://insights.sbomify.com/CVE-2026-55536/index.md","name":"CVE-2026-55536","record":{"aliases":["GHSA-6g6r-q6gw-w8fg","PYSEC-2026-3886"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"AI agent framework","requires_auth":"none","summary":"Attackers can bypass WebSocket origin validation to execute unauthorized browser automation commands in PraisonAI.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"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-625","name":"Permissive Regular Expression"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server _handle_connection() checks Chrome extension origins with re.match() and the unanchored expression chrome-extension://[a-z0-9]{32}. Extra trailing characters pass before websocket.accept(), allowing start_session commands and unauthorized browser automation. This issue is fixed in version 4.6.58.","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 has a Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)","id":"CVE-2026-55536","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"PraisonAI: Webhook SSRF via DNS fail-open in `JobSubmitRequest.validate_webhook_url()` — bypass of CVE-2026-40114","id":"CVE-2026-55537"},"packages":[{"ecosystem":"PyPI","fixed":["4.6.58"],"introduced":["0"],"last_affected":[],"package":"PraisonAI","purl":null,"source":"GHSA-6g6r-q6gw-w8fg"},{"ecosystem":"PyPI","fixed":["4.6.58"],"introduced":["0"],"last_affected":[],"package":"praisonai","purl":"pkg:pypi/praisonai","source":"GHSA-6g6r-q6gw-w8fg"},{"ecosystem":"PyPI","fixed":["4.6.58"],"introduced":["0"],"last_affected":[],"package":"praisonai","purl":"pkg:pypi/praisonai","source":"PYSEC-2026-3886"}],"prev":{"headline":"PraisonAI: Server-Side Request Forgery via DNS rebinding bypass in webhook_url validation","id":"CVE-2026-55535"},"products":["PraisonAI"],"published":"2026-08-25","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-28","vendors":["MervinPraison"]},"summary":"Attackers can bypass WebSocket origin validation to execute unauthorized browser automation commands in PraisonAI.","url":"https://insights.sbomify.com/CVE-2026-55536/"}