CVE-2023-34354: Peplink Surf Soho Firmware

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

A stored cross-site scripting (XSS) vulnerability exists in the upload_brand.cgi functionality of peplink Surf SOHO HW1 v6.3.5 (in QEMU). A specially crafted HTTP request can lead to execution of arbitrary javascript in another user's browser. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected products

• Peplink Surf Soho Firmware: version 6.3.5 only

Published 2023-10-11. Last modified 2026-06-17.