CVE-2026-3438— Nexus Repository 3 - Reflected Cross-Site Scripting (XSS) in ?describe Pages
Quick assessment
Affected
Sonatype Nexus Repository
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.
Sonatype Nexus Repository是美国Sonatype公司的一款存储库管理器，它主要用于管理、存储和分发软件等。 Sonatype Nexus Repository 3.90.2及之前版本存在安全漏洞，该漏洞源于存在反射型跨站脚本漏洞，可能导致未经身份验证的远程攻击者通过特制URL在受害者浏览器中执行任意JavaScript。
Possible ATT&CK Techniques 3 AI
T1001 · Data Obfuscation T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-3438
Vulnerability Information
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Vulnerability Title
Nexus Repository 3 - Reflected Cross-Site Scripting (XSS) in ?describe Pages
Source: CVE Program / CVE List V5
Vulnerability Description
A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted URL. Exploitation requires user interaction.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/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
Sonatype Nexus Repository 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sonatype Nexus Repository是美国Sonatype公司的一款存储库管理器，它主要用于管理、存储和分发软件等。 Sonatype Nexus Repository 3.90.2及之前版本存在安全漏洞，该漏洞源于存在反射型跨站脚本漏洞，可能导致未经身份验证的远程攻击者通过特制URL在受害者浏览器中执行任意JavaScript。
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 |
|---|---|---|---|---|
| Sonatype | Nexus Repository | 3.0.0 ~ 3.91.0 |
cpe:2.3:a:sonatype:nexus_repository_manager:3.0.0:*:*:*:*:*:*:*
|
|
II. Public POCs for CVE-2026-3438
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-3438 (1)
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V. Comments for CVE-2026-3438
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