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CVE-2026-34127— Stored Cross-Site Scripting (XSS) via Configuration File Import on TP-Link's TL-SG108PE

Quick assessment

Affected
TP-Link Systems Inc. TL-SG108PE v5
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.

TP-Link TL-SG108PE是中国普联（TP-Link）公司的一款8口千兆以太网智能受管理PoE交换机。 TP-Link TL-SG108PE v5存在安全漏洞，该漏洞源于Web管理界面在配置文件导入过程中对SYSNAM配置参数清理不当，导致存储型跨站脚本漏洞。具有管理员访问权限的攻击者可以将恶意脚本注入设备配置，当受影响界面被查看时，该脚本可能被存储并在管理员浏览器中执行，可能导致会话cookie窃取、未授权配置更改或通过管理界面暴露敏感信息。

AI Predicted 4.3 Difficulty: Trivial EPSS 0.24% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
TP-Link Systems Inc. TL-SG108PE v5 < 1.0.1 Build 260330 affected
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I. Basic Information for CVE-2026-34127

Vulnerability Information
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Vulnerability Title
Stored Cross-Site Scripting (XSS) via Configuration File Import on TP-Link's TL-SG108PE
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting (XSS) vulnerability has been identified in the web management interface of TP-Link's TL-SG108PE v5 switch due to improper sanitation of the SYSNAM configuration parameter during configuration file import. An attacker with administrator access can inject malicious script into the device configuration, which may be stored and executed in the administrator’s browser when the affected interface is viewed.     Successful exploitation may allow session cookie theft, unauthorized configuration changes, or access to sensitive information exposed through the management interface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:H/SC:L/SI:N/SA:L
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
TP-Link TL-SG108PE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link TL-SG108PE是中国普联（TP-Link）公司的一款8口千兆以太网智能受管理PoE交换机。 TP-Link TL-SG108PE v5存在安全漏洞，该漏洞源于Web管理界面在配置文件导入过程中对SYSNAM配置参数清理不当，导致存储型跨站脚本漏洞。具有管理员访问权限的攻击者可以将恶意脚本注入设备配置，当受影响界面被查看时，该脚本可能被存储并在管理员浏览器中执行，可能导致会话cookie窃取、未授权配置更改或通过管理界面暴露敏感信息。
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
TP-Link Systems Inc. TL-SG108PE v5 0 ~ 1.0.1 Build 260330 -

II. Public POCs for CVE-2026-34127

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III. Intelligence Information for CVE-2026-34127

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Vendor Advisories for CVE-2026-34127 (1)

Vendor Pages for CVE-2026-34127 (2)

IV. Related Vulnerabilities

Same vendor: TP-Link Systems Inc.
Same weakness: CWE-79