CVE-2026-56076
HIGH
8.1
CVSS 3.1
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.
Metadata
Severity & Metrics
8.1
HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| PraisonAI | PraisonAI | — | 0 < 1.5.128, 1.5.128 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-942 | cna | Permissive Cross-domain Security Policy with Untrusted Domains |
CVSS scores (2)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 8.6 | HIGH | 4.0 | cna | 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 |
| 8.1 | HIGH | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
References (2)
- GHSA Advisory GHSA-x462-jjpc-q4q4 https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
- VulnCheck Advisory: PraisonAI - Cross-Origin Agent Execution via Hardcoded Wildcard CORS and Missing Authentication on AGUI Endpoint https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint