CVE-2026-76898: jgraph drawio, SSRF

Описание

Оригинално описание

draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.3.8, src/main/java/com/mxgraph/online/Utils.java checks IPv6 Unique Local Addresses in Utils.sanitizeUrl() by comparing the text prefixes fc00:: and fd00::, but the JDK returns the expanded address form, so the fc00::/7 range, including the AWS metadata range fd00:ec2::/32, is not blocked. An unauthenticated request to /embed2.js?fetch= can therefore make src/main/java/com/mxgraph/online/EmbedServlet2.java fetch an IPv6 ULA internal resource and reflect the response to the requester. Utils.validatedAddress() uses the same private-address check for the separate ProxyServlet path, which requires ENABLE_DRAWIO_PROXY=1. The primary /embed2.js path requires no proxy feature flag or DNS rebinding, and it can disclose cloud metadata credentials or data from other IPv6-reachable internal services. This issue is fixed in version 30.3.8.

Засегнати продукти

• jgraph drawio: < 30.3.8

Вид слабост

• CWE-918 Server-Side Request Forgery

История

Други уязвимости в jgraph drawio

• 4.2CVE-2026-63373
• 6.8CVE-2026-63334
• 3.7CVE-2026-63416
• 6.1CVE-2026-58504
• 6.1CVE-2026-46642

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-76898
• https://nvd.nist.gov/vuln/detail/CVE-2026-76898
• https://github.com/jgraph/drawio/security/advisories/GHSA-m3q9-cwfq-hcjc
• https://github.com/jgraph/drawio/commit/73c4a91196246bbdb60f52b15871e82006b7972d
• https://github.com/jgraph/drawio/releases/tag/v30.3.8