What is CVE-2020-7809?

CVE-2020-7809 is a medium-severity vulnerability in Alsong Estsoft, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2020-05-15.

How severe is CVE-2020-7809?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Alsong Estsoft

CVE-2020-7809

ALSong 3.46 and earlier version contain a Document Object Model (DOM) based cross-site scripting vulnerability caused by improper validation of user input. A remote attacker could exploit this vulnerability by tricking the victim to open ALSong Album(sab) file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-05-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.4% 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

Alsong Estsoft — versions 3.46
Altools Alsong

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.altools.co.kr/support/Notice_Contents.aspx (Vendor Advisory)
www.boho.or.kr/krcert/secNoticeView.do (Third Party Advisory)

Frequently asked questions

What is CVE-2020-7809?: CVE-2020-7809 is a medium-severity vulnerability in Alsong Estsoft, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2020-05-15.
How severe is CVE-2020-7809?: Medium severity. CVSS v3 base score is 4.4 out of 10.