What is CVE-2021-38710?

CVE-2021-38710 is a medium-severity vulnerability in Yclas, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-18.

How severe is CVE-2021-38710?

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

Is CVE-2021-38710 known to be exploited?

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

XSS in Yclas

CVE-2021-38710

Static (Persistent) XSS Vulnerability exists in version 4.3.0 of Yclas when using the install/view/form.php script. An attacker can store XSS in the database through the vulnerable SITE_NAME parameter.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (47.5th percentile) — read the EPSS interpretation.

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.

Affected products

Yclas — versions 4.3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-38710?: CVE-2021-38710 is a medium-severity vulnerability in Yclas, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-18.
How severe is CVE-2021-38710?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-38710 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.