CVE-2026-19339 aliyun alibabacloud-dataworks-mcp-server initResources.ts ReadResourceRequestSchema server-side request forgery
Remote attackers can exploit a Server-Side Request Forgery vulnerability in the Alibaba Cloud DataWorks MCP server library to access internal resources.
- 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-2026-19339?
CVE-2026-19339 is a medium-severity server-side request forgery vulnerability in aliyun alibabacloud-dataworks-mcp-server, published on 9 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in aliyun alibabacloud-dataworks-mcp-server up to 1.0.43. The impacted element is the function ReadResourceRequestSchema of the file src/resources/initResources.ts. The manipulation of the argument request.params.uri results in server-side request forgery. The attack may be launched remotely. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-19339?
How do I fix CVE-2026-19339?
No fix has been published for CVE-2026-19339 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-2026-19339 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19339 exists.
Sources
Also known as GHSA-jgm8-jqmm-5rc5.