{"cve":"CVE-2026-61435","nvd":{"published":"2026-07-15T12:18:18.700","modified":"2026-10-24T21:10:00.130","status":"Deferred","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.","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","score":8.8},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":8.2},"cwes":["CWE-287"],"references":["https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33","https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753","https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh","https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing","https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-61435","score":0.00489,"percentile":0.41779,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2gpf-2492-q9jh","url":"https://osv.dev/vulnerability/GHSA-2gpf-2492-q9jh","summary":"PraisonAI: Call API localhost-only authentication bypass via spoofed Host header","modified":"2026-10-15T14:56:13.019605936Z","packages":[{"ecosystem":"PyPI","name":"praisonai","purl":"pkg:pypi/praisonai","ranges":["<4.6.78"],"fixed":["4.6.78"]}]},{"id":"PYSEC-2026-4247","url":"https://osv.dev/vulnerability/PYSEC-2026-4247","summary":"PraisonAI: Call API localhost-only authentication bypass via spoofed Host header","modified":"2026-10-15T14:45:12.950729576Z","packages":[{"ecosystem":"PyPI","name":"praisonai","purl":"pkg:pypi/praisonai","ranges":["<4.6.78"],"fixed":["4.6.78"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}