{"cve":{"cve_id":"CVE-2026-61435","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00685,"epss_percentile":0.49956,"epss_as_of":"2026-08-26","description":"PraisonAI before 4.6.78 contains an authentication bypass in the Call API agent invocation endpoints (src/praisonai/praisonai/api/agent_invoke.py) when PRAISONAI_CALL_AUTH=disabled is configured. The safeguard intended to restrict the disabled-auth opt-out to localhost binding derives the bind host from request.url.hostname, which is taken from the client-controlled HTTP Host header. A remote, unauthenticated attacker who can reach the service over the network can send a spoofed 'Host: 127.0.0.1' header to bypass the localhost-only restriction and list (GET /api/v1/agents) and invoke (POST /api/v1/agents/{agent_id}/invoke) registered agents without authentication.","published_at":"2026-07-15T11:25:39.670000Z","last_modified_at":"2026-07-15T19:50:11.367000Z","cvss_v3_score":8.2,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","cvss_v3_severity":"HIGH","cvss_v4_score":8.8,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":"poc","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-287"],"nvd_references":["https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh","https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33","https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753","https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing"],"vuln_status":"Deferred","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-07-15T12:33:20.778931Z","updated_at":"2026-07-17T02:35:13.597404Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"mervinpraison","vendor_name":"MervinPraison","product_slug":"praisonai","product_name":"PraisonAI","version_start":"0","version_start_inclusive":true,"version_end":"4.6.78","version_end_inclusive":false,"cpe23_uri":"cve5:mervinpraison:praisonai:0:4.6.78"},{"vendor_slug":"mervinpraison","vendor_name":"MervinPraison","product_slug":"praisonai","product_name":"PraisonAI","version_start":"4.6.78","version_start_inclusive":true,"version_end":"4.6.78","version_end_inclusive":true,"cpe23_uri":"cve5:mervinpraison:praisonai:4.6.78:4.6.78"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753","source_type":"PATCH","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-07-15T11:25:39.670000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-07-15T18:34:20.785243Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-15T18:34:20.785243Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-15T18:34:20.785243Z","label":"SSVC decision revised","source":"vulnrichment"}]}