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CVE-2026-73159— cti-transmute Stored XSS via Crafted Tag Icon on Admin Triage Interface

Quick assessment

Affected
MISP cti-transmute
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MISP cti-transmute是MISP组织的一款威胁情报数据格式转换工具。 MISP cti-transmute 1.4.0及之前版本存在跨站脚本漏洞，该漏洞源于mapIcon()函数未对用户提供的icon值进行充分验证，直接通过Vue的v-html插入HTML，导致跨站脚本攻击。

CVSS 5.1 · Medium EPSS 0.40% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP cti-transmute ≤ 1.4.0 affected
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I. Basic Information for CVE-2026-73159

Vulnerability Information
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Vulnerability Title
cti-transmute Stored XSS via Crafted Tag Icon on Admin Triage Interface
Source: CVE Program / CVE List V5
Vulnerability Description
Affected versions of cti-transmute allow a tag's icon value to be stored and later interpolated into HTML through Vue's v-html. The helper mapIcon() previously constructed an HTML string directly from the icon value: <i class="fas fa-${name}"></i> Because the icon is user-supplied, a crafted value could break out of the intended markup and inject attacker-controlled HTML. When the affected tag was later rendered, including on the administrative triage interface, the payload could execute in the viewer's browser. The patch mitigates the issue at multiple layers: v-html is replaced with Vue :class binding, mapIcon() now returns only a constrained FontAwesome class string, and the backend validates icons against the FontAwesome catalogue or a strict [a-z0-9-]{1,40} slug pattern before storing them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: 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)
Source: CVE Program / CVE List V5
Vulnerability Title
MISP cti-transmute 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP cti-transmute是MISP组织的一款威胁情报数据格式转换工具。 MISP cti-transmute 1.4.0及之前版本存在跨站脚本漏洞，该漏洞源于mapIcon()函数未对用户提供的icon值进行充分验证，直接通过Vue的v-html插入HTML，导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MISP cti-transmute 0 ~ 1.4.0 -

II. Public POCs for CVE-2026-73159

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III. Intelligence Information for CVE-2026-73159

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Patches & Fixes for CVE-2026-73159 (1)

Same Patch Batch · MISP · 2026-08-11 · 9 CVEs total

CVE-2026-73160 8.7 HIGH cti-transmute Unauthenticated SSRF via Hostnames Resolving to Internal IP Addresses
CVE-2026-73155 5.3 MEDIUM cti-transmute Missing Authorization Allows Reactions to Private Comments
CVE-2026-73140 5.3 MEDIUM cti-transmute Evaluation Report Exports Expose Private Comments and Author Information
CVE-2026-73156 5.3 MEDIUM cti-transmute Sunburst and Treemap Tooltips Allow Cross-Site Scripting via Crafted Convers
CVE-2026-73162 5.3 MEDIUM cti-transmute CSRF Allows Unauthorized Follow and Notification State Changes
CVE-2026-73158 5.1 MEDIUM cti-transmute Saved Graph Configuration Allows Stored Cross-Site Scripting via svgIcon
CVE-2026-73161 5.1 MEDIUM cti-transmute Conversion Table Allows XSS via Unescaped Cell Content During Search Highlig
CVE-2026-73157 2.3 LOW cti-transmute Remote MISP Event Browser Allows Cross-Site Scripting via Malicious Event Me

IV. Related Vulnerabilities

Same product: cti-transmute
Same vendor: MISP
Same weakness: CWE-79