Is CVE-2021-40261 actively exploited?

No active exploitation of CVE-2021-40261 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40261 be exploited remotely?

Yes. CVE-2021-40261 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40261?

CVE-2021-40261 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2021-40261

MEDIUM

CVE-2021-40261

CWE-79Published: November 8, 2021· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

Multiple Cross Site Scripting (XSS) vulnerabilities exist in SourceCodester CASAP Automated Enrollment System 1.0 via the (1) user_username and (2) category parameters in save_class.php, the (3) firstname, (4) class, and (5) status parameters in student_table.php, the (6) category and (7) class_name parameters in add_class1.php, the (8) fname, (9) mname,(10) lname, (11) address, (12) class, (13) gfname, (14) gmname, (15) glname, (16) rship, (17) status, (18) transport, and (19) route parameters in add_student.php, the (20) fname, (21) mname, (22) lname, (23) address, (24) class, (25) fgname, (26) gmname, (27) glname, (28) rship, (29) status, (30) transport, and (31) route parameters in save_stud.php,the (32) status, (33) fname, and (34) lname parameters in add_user.php, the (35) username, (36) firstname, and (37) status parameters in users.php, the (38) fname, (39) lname, and (40) status parameters in save_user.php, and the (41) activity_log, (42) aprjun, (43) class, (44) janmar, (45) Julsep,(46) octdec, (47) Students and (48) users parameters in table_name.

NVD Source

Technical Analysis

CVE-2021-40261 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.