Medium severity · published May 29, 2026
CVE-2026-34127
Stored Cross-Site Scripting (XSS) via Configuration File Import on TP-Link's TL-SG108PE
4.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TV
TL-SG108PE v5 · TP-Link Systems Inc.
before 1.0.1 Build 260330 · source: vendor
TF
Tl-sg108pe Firmware · Tp-link
1.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34127
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34127
Product
https://www.tp-link.com/en/support/download/tl-sg108pe/v5/#Firmware
Product
https://www.tp-link.com/us/support/download/tl-sg108pe/v5/#Firmware
Vendor Advisory
https://www.tp-link.com/us/support/faq/5110/
