CVE-2026-61435: MervinPraison PraisonAI auth bypass in Call API agent invocation

CVE-2026-61435 · Severity: high · CVSS 8.2 · Published 2026-07-15

PraisonAI, a platform for managing AI agents, contains a security flaw that allows unauthorized users to bypass authentication when a specific 'disabled' mode is active. Although this mode was intended to only work for local users on the same machine, an attacker can trick the system into thinking they are local by sending a fake network header. This allows an attacker to list and trigger AI agents without permission, potentially leading to unauthorized data processing or service misuse.

Technologies: praisonai (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2026-61435 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-61435 being exploited in the wild.
How severe is CVE-2026-61435?
High severity, with a CVSS score of 8.2, published 15 July 2026.
Which products and versions are affected?
praisonai (PyPI) <= 4.6.77, ECOSYSTEM:introduced=0,fixed=4.6.78.
Is there a fix for CVE-2026-61435?
Yes. praisonai (PyPI): upgrade to 4.6.78 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-61435 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-61435?
Check whether you run praisonai (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • praisonai (PyPI): upgrade to 4.6.78 or later
    pip install "praisonai>=4.6.78"

Technical details

An authentication bypass exists in the Call API agent invocation endpoints (src/praisonai/praisonai/api/agent_invoke.py) of PraisonAI when the PRAISONAI_CALL_AUTH=disabled configuration is used. The application attempts to restrict this unauthenticated mode to localhost by checking request.url.hostname; however, this value is derived from the client-controlled HTTP Host header. A remote, unauthenticated attacker can send a request with a 'Host: 127.0.0.1' header to bypass this check. Successful exploitation allows the attacker to list registered agents via GET /api/v1/agents and invoke them via POST /api/v1/agents/{agent_id}/invoke. The issue is addressed in version 4.6.78.

Affected products

  • MervinPraison PraisonAI < 4.6.78

Identifiers

  • CVE-2026-61435
  • GHSA-2gpf-2492-q9jh
  • PYSEC-2026-4247

Timeline

  • 2026-06-25: advisory: GitHub Security Advisory GHSA-2gpf-2492-q9jh published
  • 2026-07-15: disclosed: CVE-2026-61435 published to NVD

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.