PT-2026-60138 · Mervinpraison · Praisonai

Rexpository · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-61435

Mitre

CVSS v3.1

8.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

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.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-61435

Affected Products

Praisonai

References · 5

• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh · Vendor Advisory
• https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33 · Patch
• https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-61435 · Security Note
• https://vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing · Note