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Description

A flaw has been found in langgenius dify up to 1.13.3. This issue affects the function parse_openai_plugin_json_to_tool_bundle of the file api/core/tools/utils/parser.py of the component ApiBasedToolSchemaParser. Executing a manipulation of the argument url can lead to server-side request forgery. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-04-19 | Published 2026-04-20 | Updated 2026-04-20 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Server-Side Request Forgery

Product status

1.13.0
affected

1.13.1
affected

1.13.2
affected

1.13.3
affected

Timeline

2026-04-19:Advisory disclosed
2026-04-19:VulDB entry created
2026-04-19:VulDB entry last update

Credits

Eric-g (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/358253 (VDB-358253 | langgenius dify ApiBasedToolSchemaParser parser.py parse_openai_plugin_json_to_tool_bundle server-side request forgery) vdb-entry technical-description

vuldb.com/vuln/358253/cti (VDB-358253 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/792241 (Submit #792241 | LangGenius Dify <= v1.13.3 Server-Side Request Forgery (CWE-918)) third-party-advisory

gist.github.com/...user2025/d7b1c574b0e32eb9169f7046b486e662 exploit

cve.org (CVE-2026-6618)

nvd.nist.gov (CVE-2026-6618)

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