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CVE-2026-63373— draw.io: OAuth CSRF via missing state validation on self-hosted deployments allows session token injection

一分钟漏洞结论

影响对象
jgraph drawio
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, the OAuth callback handler in src/main/java/com/mxgraph/online/AbsAuth.java skips comparison of stateToken and cookieToken whenever IS_GAE is false, which affects sel

CVSS 4.2 · Medium EPSS 0.13% · P3

影响版本矩阵 1

厂商产品 版本范围状态
jgraph drawio < 30.2.7 affected
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一、 漏洞 CVE-2026-63373 基础信息

漏洞信息

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Vulnerability Title
draw.io: OAuth CSRF via missing state validation on self-hosted deployments allows session token injection
来源: CVE Program / CVE List V5
Vulnerability Description
draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, the OAuth callback handler in src/main/java/com/mxgraph/online/AbsAuth.java skips comparison of stateToken and cookieToken whenever IS_GAE is false, which affects self-hosted Docker and WAR deployments. An attacker can provide an authorization code for the attacker's cloud-storage identity and induce a victim to visit a callback URL, causing the victim's draw.io session to become authenticated as the attacker identity without a valid state binding. The shared handler affects Google Drive, OneDrive, GitHub, GitLab, and Dropbox integrations. The victim can then unknowingly perform cloud-storage actions under the attacker's identity, causing session integrity loss and misattribution, but the identity binding does not itself grant access to existing victim cloud files. This issue is fixed in version 30.2.7.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
jgraph drawio < 30.2.7 -

二、漏洞 CVE-2026-63373 的公开POC

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三、漏洞 CVE-2026-63373 的情报信息

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CVE-2026-63373 其他参考 (2)

同批安全公告 · jgraph · 2026-09-21 · 共 5 条

CVE-2026-76898 7.7 HIGH draw.io: Unauthenticated SSRF via IPv6 ULA blocklist bypass in /embed2.js
CVE-2026-63334 6.8 MEDIUM draw.io: SSRF via DNS rebinding in ProxyServlet bypasses private IP blocklist
CVE-2026-58504 6.1 MEDIUM draw.io: Stored XSS on file open via editable=0 sibling cell — patch bypass of CVE-2026-46
CVE-2026-63416 3.7 LOW draw.io: Path traversal in ExportProxyServlet allows access to arbitrary backend endpoints

IV. Related Vulnerabilities

Same product: drawio
Same vendor: jgraph
Same weakness: CWE-352

V. Comments for CVE-2026-63373

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