What is CVE-2023-34354?

CVE-2023-34354 is a low-severity vulnerability in Peplink Surf Soho, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 3.4/10. Published 2023-10-11.

How severe is CVE-2023-34354?

Low severity. CVSS v3 base score is 3.4 out of 10.

XSS in Peplink Surf Soho

CVE-2023-34354

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.

Published 2023-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Peplink Surf Soho — versions hw1
Peplink Surf Soho Firmware — versions 6.3.5
Peplink Surf Soho Hw1 — versions v6.3.5 (in QEMU)

Weakness classification (CWE)

References

talosintelligence.com/vulnerability_reports/TALOS-2023-1781 (Product, Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-34354?: CVE-2023-34354 is a low-severity vulnerability in Peplink Surf Soho, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 3.4/10. Published 2023-10-11.
How severe is CVE-2023-34354?: Low severity. CVSS v3 base score is 3.4 out of 10.