CVE-2026-73374— Vulnerability-Lookup 跨站脚本漏洞
一分钟漏洞结论
影响对象
vulnerability-lookup vulnerability-lookup
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。
Vulnerability-Lookup是Vulnerability-Lookup团队开源的一个漏洞查询与扫描工具。 Vulnerability-Lookup 5.5.1及之前版本存在跨站脚本漏洞，该漏洞源于render_tag_badges Jinja过滤器将引用标签直接插入HTML badge元素并标记为安全，绕过Jinja自动HTML转义，可能导致存储型跨站脚本攻击，造成JavaScript执行，攻击者可代表受害者执行操作、访问浏览器会话信息或修改页面内容。
影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| vulnerability-lookup | vulnerability-lookup | ≤ 5.5.1 |
affected |
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一、 漏洞 CVE-2026-73374 基础信息
漏洞信息
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Vulnerability Title
Stored Cross-Site Scripting (XSS) via Unescaped CNA Reference Tags in vulnerability-lookup
来源: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting (XSS) vulnerability existed in Vulnerability-Lookup in the render_tag_badges Jinja filter used to display reference tags associated with vulnerability records.
Values from containers.cna.references[].tags[] were directly interpolated into HTML badge elements and the resulting string was wrapped in markupsafe.Markup. Because Markup marks the generated content as safe, Jinja's automatic HTML escaping was bypassed.
An authenticated user with permissions to create or modify vulnerability records, such as a user holding the vulnerability:create or vulnerability:modify permission, could submit a crafted reference tag through the CNA API containing arbitrary HTML or JavaScript-capable markup.
The malicious value would subsequently be stored as part of the vulnerability record. When another user visited the corresponding public /cve/<id> or /vuln/<id> page, the crafted tag would be rendered as HTML in the viewer's browser. This could result in JavaScript execution in the security context of the Vulnerability-Lookup application.
Successful exploitation could allow an attacker to perform actions in the context of a victim, access information available to the victim's browser session, or modify page content. As the affected vulnerability pages can be accessed publicly, exploitation may affect users who are not authenticated.
The issue was corrected by applying markupsafe.escape() to each reference tag before inserting it into the HTML badge markup, while retaining Markup only for the static HTML scaffolding.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:H/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
来源: CVE Program / CVE List V5
Vulnerability Title
Vulnerability-Lookup 跨站脚本漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Vulnerability-Lookup是Vulnerability-Lookup团队开源的一个漏洞查询与扫描工具。 Vulnerability-Lookup 5.5.1及之前版本存在跨站脚本漏洞，该漏洞源于render_tag_badges Jinja过滤器将引用标签直接插入HTML badge元素并标记为安全，绕过Jinja自动HTML转义，可能导致存储型跨站脚本攻击，造成JavaScript执行，攻击者可代表受害者执行操作、访问浏览器会话信息或修改页面内容。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| vulnerability-lookup | vulnerability-lookup | 0 ~ 5.5.1 | - |
|
二、漏洞 CVE-2026-73374 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-73374 补丁与修复 (1)
同批安全公告 · vulnerability-lookup · 2026-08-12 · 共 4 条
| CVE-2026-73431 | 8.8 HIGH | Vulnerability-Lookup 授权问题漏洞 |
| CVE-2026-73405 | 5.3 MEDIUM | Vulnerability-Lookup 授权问题漏洞 |
| CVE-2026-73432 | 5.1 MEDIUM | Vulnerability-Lookup 服务端请求伪造漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-73374
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