CVE-2026-6618Public exploitNetwork attack vector

Authenticated SSRF via direct OpenAPI schema fetch

Published Apr 20, 2026 · Updated Apr 20, 2026

SSRF in Dify 1.13.0 through 1.13.3 allows remote authenticated users to make backend requests via a crafted OpenAI plugin manifest. ApiBasedToolSchemaParser.parse_openai_plugin_json_to_tool_bundle extracts api.url from user-supplied JSON and passes it to direct httpx.get(), bypassing the configured SSRF proxy. Custom-tool creation access is required; the backend request can reach otherwise inaccessible internal IP addresses and ports.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Dify 1.13.0 through 1.13.3 allows remote authenticated users to make backend requests via a crafted OpenAI plugin manifest. ApiBasedToolSchemaParser.parse_openai_plugin_json_to_tool_bundle extracts api.url from user-supplied JSON and passes it to direct httpx.get(), bypassing the configured SSRF proxy. Custom-tool creation access is required; the backend request can reach otherwise inaccessible internal IP addresses and ports.

The record

CVE
CVE-2026-6618
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
LangGenius
Product
Dify
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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=1.13.0
  2. Affected versionversion=1.13.1
  3. Affected versionversion=1.13.2
  4. Affected versionversion=1.13.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LangGenius · Difyversion=1.13.0; version=1.13.1; version=1.13.2; version=1.13.3

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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