CVE-2026-34127 PUBLISHED

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

Assigner: TPLink
Reserved: 25.03.2026 Published: 29.05.2026 Updated: 29.05.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 5.3

Product Status

Vendor TP-Link Systems Inc.
Product TL-SG108PE v5
Versions Default: unaffected
  • affected from 0 to 1.0.1 Build 260330 (excl.)

Credits

  • Christopher Walker finder

References

Problem Types

  • CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE

Impacts

  • CAPEC-63 Cross-Site Scripting (XSS)