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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.

PUBLISHED Reserved 2026-03-25 | Published 2026-05-29 | Updated 2026-05-29 | Assigner TPLink




MEDIUM: 5.3CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:H/SC:L/SI:N/SA:L

Problem types

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

Product status

Default status
unaffected

Any version before 1.0.1 Build 260330
affected

Credits

Christopher Walker finder

References

www.tp-link.com/en/support/download/tl-sg108pe/v5/ patch

www.tp-link.com/us/support/download/tl-sg108pe/v5/ patch

www.tp-link.com/us/support/faq/5110/ vendor-advisory

cve.org (CVE-2026-34127)

nvd.nist.gov (CVE-2026-34127)

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