CVE-2026-6618 langgenius dify ApiBasedToolSchemaParser parser.py parse_openai_plugin_json_to_tool_bundle server-side request forgery
Remote attackers can exploit a server-side request forgery vulnerability in Dify's tool parser to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6618?
CVE-2026-6618 is a medium-severity server-side request forgery vulnerability in langgenius dify, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-6618?
How do I fix CVE-2026-6618?
No fix has been published for CVE-2026-6618 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-6618 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6618 exists.
Sources
Also known as GHSA-337w-xf2q-h5w2.