CVE-2026-56076Public exploitNetwork attack vector

Agent execution via unauthenticated wildcard-CORS endpoint

Published Jun 18, 2026 · Updated Jun 18, 2026

Cross-origin request abuse in PraisonAI before 1.5.128 allows remote attackers to execute agents and read their responses. POST /agui accepts unauthenticated text/plain JSON and returns a streaming response with a wildcard origin, so browsers send and expose the result cross-origin. Exploitation requires a running AGUI server and a user to visit attacker-controlled web content; exposed data and actions depend on configured tools.

CVSS severity8.6
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-origin request abuse in PraisonAI before 1.5.128 allows remote attackers to execute agents and read their responses. POST /agui accepts unauthenticated text/plain JSON and returns a streaming response with a wildcard origin, so browsers send and expose the result cross-origin. Exploitation requires a running AGUI server and a user to visit attacker-controlled web content; exposed data and actions depend on configured tools.

The record

CVE
CVE-2026-56076
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
PraisonAI
Product
PraisonAI
Classifications
CWE-942, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.5.128

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PraisonAI · PraisonAIversion=0 <1.5.128

Published CVSS scores

8.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-942Permissive Cross-domain Security Policy with Untrusted Domains
T1204.001User Execution: Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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