What is CVE-2021-27317?

CVE-2021-27317 is a medium-severity vulnerability in Doctor Appointment System Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-01.

How severe is CVE-2021-27317?

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

Is CVE-2021-27317 known to be exploited?

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

XSS in Doctor Appointment System Project

CVE-2021-27317

Cross Site Scripting (XSS) vulnerability in contactus.php in Doctor Appointment System 1.0 allows remote attackers to inject arbitrary web script or HTML via the comment parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-01 · 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: 0.013 (69.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Doctor Appointment System Project — versions 1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

www.sourcecodester.com/php/14182/doctor-appointment-system.html (Product)
packetstormsecurity.com/files/161574/Doctor-Appointment-System-1.0-Cross-Site-S… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27317?: CVE-2021-27317 is a medium-severity vulnerability in Doctor Appointment System Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-01.
How severe is CVE-2021-27317?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-27317 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.