CVE-2026-73082Network attack vectorHinoki check available

Authenticated SSRF via unvalidated MCP server URL

Published Aug 11, 2026 · Updated Aug 11, 2026

SSRF in Activepieces before 0.82.0 allows remote authenticated users to probe internal services through MCP tool validation. The POST /api/v1/projects/:projectId/mcp-server/validate-agent-mcp-tool endpoint sends an HTTP or SSE request to the user-controlled serverUrl without URL validation, address filtering, or SSRF protection. Authentication is required; the request reveals network reachability from the server, including access to private and cloud-metadata addresses.

CVSS severity5.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in Activepieces before 0.82.0 allows remote authenticated users to probe internal services through MCP tool validation. The POST /api/v1/projects/:projectId/mcp-server/validate-agent-mcp-tool endpoint sends an HTTP or SSE request to the user-controlled serverUrl without URL validation, address filtering, or SSRF protection. Authentication is required; the request reveals network reachability from the server, including access to private and cloud-metadata addresses.

The record

CVE
CVE-2026-73082
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Activepieces
Product
Activepieces
Classifications
CWE-918, CWE-200, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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=< 0.82.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Activepieces · Activepiecesversion=< 0.82.0

Published CVSS scores

5.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1046Network Service Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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