CVE-2026-56076

HIGH
MEDIUM Priority: 0.05 BB Relevance: 67/100
Published: 2026-06-18 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: None
VC: High
VI: High
VA: None

Description

PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's Content-Type-agnostic JSON parsing, enabling attackers to bypass CORS preflight checks via simple requests and exfiltrate sensitive agent responses including tool execution results and environment data.

Affected Software (1)

VendorProductVersion
PraisonAI PraisonAI 0 < 1.5.128

Bug Bounty Relevance

67 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

8.6 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.64%
Raw Score 0.006370
Percentile 51.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00637
2026-11-12
0.00637
2026-11-10
0.00637
2026-11-09
0.00637
2026-11-08
0.00637

Intelligence Sources

mitre ref →