What is CVE-2020-23517?

CVE-2020-23517 is a medium-severity vulnerability in Aryanic High Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-26.

How severe is CVE-2020-23517?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-23517 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Aryanic High Cms

CVE-2020-23517

Cross Site Scripting (XSS) vulnerability in Aryanic HighMail (High CMS) versions 2020 and before allows remote attackers to inject arbitrary web script or HTML, via 'user' to LoginForm.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.071 (94.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.071 · newest: 0.071 · change: 0.000

Affected products

Aryanic High Cms

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

vulnerabilitypublishing.blogspot.com/2021/03/aryanic-highmail-high-cms-reflecte… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-23517?: CVE-2020-23517 is a medium-severity vulnerability in Aryanic High Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-26.
How severe is CVE-2020-23517?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-23517 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.