What is CVE-2020-35704?

CVE-2020-35704 is a medium-severity vulnerability in Daybydaycrm Daybyday, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-12-25.

How severe is CVE-2020-35704?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Daybydaycrm Daybyday

CVE-2020-35704

Daybyday 2.1.0 allows stored XSS via the Title parameter to the New Lead screen.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-12-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Daybydaycrm Daybyday — versions 2.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

tufangungor.github.io/exploit/2020/12/12/daybydaycrm-2.1.0-multiple-stored-xss… (Exploit, Third Party Advisory)
github.com/Bottelet/DaybydayCRM/releases (Third Party Advisory)

Frequently asked questions

What is CVE-2020-35704?: CVE-2020-35704 is a medium-severity vulnerability in Daybydaycrm Daybyday, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-12-25.
How severe is CVE-2020-35704?: Medium severity. CVSS v3 base score is 5.4 out of 10.