Security feed

24 October 2026

advisoryMediumOfficial CVE List24 Oct 2026

draw.io: Stored XSS on file open via editable=0 sibling cell — patch bypass of CVE-2026-46642

draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.5, opening or importing a crafted .drawio file can execute attacker-controlled JavaScript in the draw.io origin when selected cells are processed by TextFormatPanel.addFont() in src/main/webapp/js/grapheditor/Format.js. An HTML sibling cell keeps the formatted-label path enabled while an editable=0 plain-text sibling is excluded from the merged selection style but remains in the iteration set. graph.cellRenderer.getLabelValue() returns that plain-text label without HTML encoding, and mxUtils.canConvertHtmlToSvg() parses it as HTML, bypassing the earlier CVE-2026-46642 remediation. Successful exploitation can expose diagram data, browser storage, non-HttpOnly cookies, and same-origin actions available to the victim. This issue is fixed in version 30.2.5.

Announced 21 Sept 2026

drawio CVE-2026-58504

Structured advisory · Revision 1Original source

Evidence and details

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-58504

drawio

Source reference: /containers/cna/affected/0/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Related CVEs: CVE-2026-58504
Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event: #3497 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 21:36:10 GMT
Publisher date: Mon, 21 Sep 2026 16:15:30 GMT

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advisoryHighOfficial CVE List24 Oct 2026

draw.io: Unauthenticated SSRF via IPv6 ULA blocklist bypass in /embed2.js

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.

Announced 21 Sept 2026

drawio CVE-2026-76898

Structured advisory · Revision 1Original source

Evidence and details

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-76898

drawio

Source reference: /containers/cna/affected/0/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Related CVEs: CVE-2026-76898
Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event: #1947 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 21:10:42 GMT
Publisher date: Mon, 21 Sep 2026 16:31:54 GMT

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advisoryLowOfficial CVE List24 Oct 2026

draw.io: Path traversal in ExportProxyServlet allows access to arbitrary backend endpoints

draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, src/main/java/com/mxgraph/online/ExportProxyServlet.java uses request.getPathInfo() to build a proxyPath and appends it directly to EXPORT_URL without rejecting dot segments or confirming that the normalized destination remains under the configured export path. An unauthenticated request containing traversal segments can therefore address unintended routes on the internal export server, and the servlet forwards all request headers and the request body to that destination, allowing arbitrary header injection. Depending on the export service configuration, exploitation can expose administration, debugging, health, or configuration endpoints and can permit unintended internal actions. This issue is fixed in version 30.2.7.

Announced 21 Sept 2026

drawio CVE-2026-63416

Structured advisory · Revision 1Original source

Evidence and details

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-63416

drawio

Source reference: /containers/cna/affected/0/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Related CVEs: CVE-2026-63416
Source reference: /cveMetadata/cveId

Publisher severity

low

Source reference: /containers/cna/metrics

Event: #1946 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 21:10:41 GMT
Publisher date: Mon, 21 Sep 2026 16:18:39 GMT

Read the original announcement